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Molar incisor hypomineralisation

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Molar incisor hypomineralisation
Cell types found in a developing tooth tissue under a microscope. The development of ameloblasts was disrupted and hence leading to enamel being less mineralised than normal.
SpecialtyDentistry

Molar incisor hypomineralisation (MIH) is a type of enamel defect affecting, as the name suggests, the first molars and incisors in the permanent dentition.[1] MIH is considered a worldwide problem with a global prevalence of 12.9% and is usually identified in children under 10 years old.[2] This developmental condition is caused by the lack of mineralisation of enamel during its maturation phase, due to interruption to the function of ameloblasts.[1] Peri- and post-natal factors including premature birth, certain medical conditions, fever and antibiotic use have been found to be associated with development of MIH. Recent studies have suggested the role of genetics and/or epigenetic changes to be contributors of MIH development.[3] However, further studies on the aetiology of MIH are required because it is believed to be multifactorial.[4]

MIH often presents as discolouration of the affected permanent molars and incisors. The enamel of the affected teeth appears yellow, brown, cream or white[1] and thus are sometimes referred to as 'cheese molars'.[5] These teeth are deemed less aesthetically pleasing, potentially causing distress in children with MIH and their parents.[6] It is important to note that although there is difference in enamel translucency in the affected teeth, there should not be any changes to the enamel thickness, unlike in enamel hypoplasia.[1]

As a consequence, children with MIH are more likely to experience tooth decay compared to those without the condition.[6] Moreover, the development of tooth decay is very rapid due to the less-mineralised enamel.[1] MIH only becomes visible once the permanent molars start to erupt and that is when opacities on the tooth can be observed if it is affected. It is important for the children who are suspected to suffer from MIH to visit their dentist at regular intervals to prevent any further complications affecting their oral health.[7]

Signs and symptoms

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The manifestation of the disease in those affected with MIH can vary greatly. It can be common for the enamel of one molar to be affected while the enamel of the contralateral molar is clinically unaffected, or with minor defects only.[8]

Lesions

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The lesions that appear in teeth affected with MIH can present as opacities that vary from white to yellow-brown.[8] They are usually asymmetrical in appearance, with a sharp demarcation that distinguishes between normal and affected enamel.[9] The lesions usually do not involve the cervical third of affected teeth.[10]

Post-eruptive breakdown

[edit]

Post-eruptive breakdown (PEB) is a clinical feature, often observed in the majority of severely affected cases and requires prompt dental treatment. The rate of PEB may be increased by the loading of masticatory forces on enamel weakened by MIH. The lesions resulting from PEB are irregularly shaped,[11] with rough margins from the shearing of the enamel.  PEB is more likely to occur in MIH-affected teeth with yellow or brown opacities rather than those with white opacities, as darker lesions reflect a greater deficit in mineral content.[11]

Atypical caries

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Teeth affected with MIH are at an increased risk of acquiring atypical dental caries (cavities).[12] This is because the properties of the enamel are altered with increased porosity and decreased hardness. Essentially, the normal balance between mineralisation and demineralisation shifts to favour demineralisation of enamel, giving the tooth less resilience in structure, thereby making it vulnerable to caries.[13]

The poor structural properties of the enamel in teeth with MIH also increase the likelihood of cavitation of any lesion,[13] thereby causing the lesion to progress at a faster rate. Progression of the carious lesion is also more rapid in teeth with MIH as patients may experience tooth sensitivity while carrying out oral hygiene, causing them to avoid doing so and consequentially accelerating the decay.[13]

Hypersensitivity

[edit]

Teeth affected by MIH are often affected by hypersensitivity due to changes in temperature or tooth brushing. A study has suggested that a possible cause of hypersensitivity in MIH is the inflammatory reactions in the pulp due to oral bacteria penetrating through the hypomineralised enamel into the dentinal tubules.[14]

Difficult to anaesthetise

[edit]

It has been reported that MIH-affected teeth were more difficult to anaesthetise.[15] Difficulty achieving adequate anaesthesia in MIH-affected teeth may be caused by the chronic inflammation of the pulp due to the penetration of bacteria as the presence of inflammation can reduce the efficacy of local anaesthetics[16] which may then result in more anaesthetic being given to achieve profound anaesthesia. Undertaking dental treatment without profound local anaesthesia can result in a child becoming more fearful and anxious when receiving dental treatment.[17] This can be especially challenging in paediatric dentistry; thus, additional methods may be needed to provide appropriate treatment for these teeth.[18]

Opacities due to MIH can be quite visible especially on anterior teeth presenting aesthetic problems. Patients frequently claim aesthetic concerns when anterior teeth are involved.[19] The discoloured appearance of the anterior teeth could also have negative effects on a child's psychological development and self-esteem.[20]

Tooth breakdown and restoration problems

[edit]

MIH-affected teeth are more prone to breakdown as they are hypomineralised which weakens the enamel structure.[21] Restorations placed on MIH-affected teeth were found to be more prone to failure due to both loss of tooth structure and material loss.[22] The enamel can also fracture more easily due to chewing forces.[23]

Causes

[edit]

The exact cause of MIH is unknown but thought to be multifactorial.[24]

It has been found that peri- and post-natal factors play a more important role in development of MIH than prenatal factors.

Hypoxia, caesarean section, and premature birth are among perinatal factors that have been associated with development of MIH. Additionally, postnatal factors such as urinary tract infection, otitis media, measles, kidney disease, pneumonia, asthma, antibiotic use, and fever have all been associated with MIH.[24]

Prenatal risks such as infection, maternal psychological stress and frequent exposure to ultrasonic scans were all correlated with increased risks of MIH.

During the perinatal stage, Pitiphat found that cesarean section and complications during vaginal delivery could contribute to an increased chance of MIH.[2] Children born preterm and those with poor general health or systemic conditions in their first three years of development also run a higher risk of developing MIH.[25] It has also been proposed that developmental dental defects were associated with long-term breastfeeding due to exposure to dioxin. However, a recent meta-analysis has reported prolonged breastfeeding to not be associated with MIH. [24]

More recent evidence has suggested a relationship between respiratory diseases and oxygen shortage of the ameloblasts and MIH.[10] Lastly, oxygen shortage combined with low birth weight is suspected to be a contributing factor [26]

Diagnosis

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Differential diagnosis

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It is essential to exclude other causes of enamel opacities, differentiating MIH from them, to ensure an appropriate treatment plan is made. These conditions include:

  • Dental caries, which is the most common cause of destruction of dental hard tissues. This is more unlikely in a patient with a previously intact primary dentition. White spot lesions are also uncommon on incisors, hence ruling out dental caries.
  • Fluorosis, which can result from an intake of a high fluoride concentration while the tooth is still undergoing mineralisation. Fluorosis presents as irregular, diffuse enamel opacities which affect more than one tooth, in contrast to the well-demarcated borders of hypomineralised enamel seen in MIH.
  • Amelogenesis imperfecta, a genetic condition; thus, there may be a history of similar defects in other family members. This condition affects both the primary and permanent dentition, and all surfaces tend to be equally affected, differentiating it from MIH.
  • Trauma to primary incisors resulting in discolouration of permanent incisors.
  • Administration of tetracycline during pregnancy and to children under six resulting in tooth staining (grey or yellow).
  • Enamel hypoplasia, caused by defective enamel matrix formation, is a quantitative defect which presents as a localised reduction in enamel thickness. This differs from hypomineralisation, which is a qualitative defect affecting the translucency of enamel.[1]

Classification

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MIH examination should be carried out on clean, moist teeth. The ideal age for examination is when the child is eight years old – the age where all permanent first molars and most of the incisors are erupted. The permanent first molar will also still be in a comparatively sound condition without excessive post-eruption breakdown.[1] Judgements of each individual tooth should be recorded, aiding the correct diagnosis of the condition.

There is currently[as of?] a lack of standardisation in the scoring system and severity indices used to record the diagnosis of MIH. Various systems commonly employed in studies include:

  • Modified Defect of Dental Enamel (DDE) Index:[citation needed] This set of criteria allows for enamel defects to be detected, enabling a distinction between demarcated and diffused opacities.[27]
  • European Academy of Paediatric Dentistry (EAPD) judgement criteria: This set of criteria was developed in 2003 to standardise classifications for use in epidemiological studies. However, while it allows the categorisation of the enamel condition, it does not address the severity of the enamel condition.[28]
  • Molar Hypomineralisation Severity Index (MHSI): This set of criteria has been developed to address deficiencies in indices concerning the severity of hypomineralisation. It is based on both the clinical characteristics of hypomineralised defects and the EAPD judgement criteria. It was found to be effective in guiding the clinical management of children by predicting treatment undertaken for affected permanent first molars.[29]
  • Ghanim et al index: The index combines principles of the EAPD judgement criteria and DDE index in order to grade the clinical status, amount of tooth surface area affected, and other enamel defects comparable to MIH.[30] The index has been validated[31] and a training manual was developed to assist researchers in implementing the index in a standardised manner.[32]

Prevention

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Prevention is of prior importance at an early developmental age as the defective tooth is more likely to have caries and post-eruptive breakdown due to its increased porosity.[33] Appropriate dietary advice and toothpaste with a fluoride level of at least 1,000 ppm F should be recommended.[34] For treating spontaneous hypersensitivity professional applications of fluoride varnish (e.g. Duraphat 22,600ppm F) or 0.4% stannous fluoride gel may be helpful.[33]

Casein Phosphopepetide-Amorphus Calcium Phosphate (CPP-ACP) provides a supersaturated environment of calcium and phosphate on the enamel surface to enhance remineralisation in the form of toothpaste or sugar free chewing gum. Its clinical effectiveness is still debatable but may benefit those patients who complain of mild pain to external stimuli.[35][36]

Treatment

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The frequency of first permanent molar treatment for children with MIH is nearly 10 times greater compared to children without MIH.[17] 27.4% of MIH-affected teeth will need treatment due to pain, sensitivity or post-eruptive breakdown.[37] The available treatment modalities for MIH is extensive but the decision on which treatment should be used is complex and multifactorial. Factors may include condition severity, the patient's dental age, the child and parent's social background and expectations.[33] There are treatment modalities available to manage children affected by MIH; however, the evidence supporting these modalities are still weak.[38]

Anterior teeth

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Etch-bleach-seal technique

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Involves repeated cycles of etching with 37% phosphoric acid followed by applying 5% sodium hypochlorite until improvement of discolouration is achieved.[39] Clear resin composite or resin infiltrate can be used to seal the lesion after the technique.[40]

Microabrasion

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This image shows a dental veneer, usually used to improve aesthetics of teeth.

The aesthetics of a child's anterior teeth is a concern for both children and their parents alike.

Yellow or brownish-yellow defects are of full thickness,[41] and therefore may respond to bleaching with carbamide peroxide.[42] However, careful consideration should be made of the risks including hypersensitivity, mucosal irritation and enamel surface alterations.[43]

Creamy-yellow or whitish-creamy defects are less porous and variable in depth,[41] and may respond to microabrasion with 18% hydrochloric acid or 37.5% phosphoric acid and abrasive paste.[44][45] Again, this should be undertaken cautiously as microabrasion may result in loss of enamel.[46]

Veneers

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Direct or indirect composite veneers can be effective in improving aesthetics with minimal tooth tissue removal.[47] Ceramic veneers as a treatment option should be delayed due to the risks of resulting in a short clinical crown height, immature tooth pulp irritation and also the instability of the gingival margins during the eruption of teeth.[33]

Posterior teeth

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Fissure sealants

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The placement of fissure sealants on permanent molars without post-eruptive breakdown should be undertaken.[33] Use of a fifth-generation bonding adhesive prior to fissure sealant application may improve retention rates of fissure sealants.[48]

For partially erupted molars with inadequate moisture control, glass ionomer cements (GIC) can be considered as an interim treatment option. As the retention rate of GIC is often poor, replacement with a resin-based fissure sealant is recommended following tooth eruption.[33]

Resin-based fissure sealants can be beneficial to patients affected with mild MIH where the first permanent molars have fully erupted, although the degree of hypomineralization affects the bond strength of said sealants.[49][48] The bond strength of resin based fissure sealants to affected MIH can be enhanced by pre-treating with 5% sodium hypochlorite for one minute after etching, and applying a bonding agent. However, more evidence is needed from clinical-based studies.[50][51]

Direct restorations

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Cavity design
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There is still much debate of whether margin extension should include removal of all defective enamel or only the porous enamel. The former provides sound enamel for bonding but leads to excessive tooth tissue loss. The latter is less invasive, but the margins may have a high risk of breakdown due to defective bonding.[33] Yet, it is agreed that adhesive restorations should be used as opposed to those reliant upon mechanical retention (such as amalgam).[49]

Composite resin restorations
[edit]

Composite resin material has been shown to have longer-term stability in MIH teeth, with a median survival rate of 5.2 years[52] and a success rate of 74%–100%[49][53] during a four-year follow-up period. Self-etching adhesive was found to have better bond strength to enamel affected by MIH compared to total etch single-bottle adhesive.[54] The use of composite should be considered both for permanent molars affected by MIH, as well as incisors. Furthermore, composite veneers may achieve a better aesthetic result where deep lesions are seen in incisors.[55][23]

Glass ionomer cement (GIC) restorations
[edit]

GIC materials have adhesive capabilities with both enamel and dentine, long-term fluoride release and hydrophilicity when there is inadequate moisture control intra-orally, during early post-eruptive stages. However, GIC's poorer mechanical properties suggest avoidance in stress-bearing areas. In later post-eruptive stages GIC may be valuable as sub-layer beneath composite restorations.[33] Studies with long-term follow-up times on the survival rates of GIC restorations of MIH-affected molars are lacking. As composite resin has been shown to be more reliable in restorations of MIH-affected molars, it is suggested that GICs be used as an interim measure prior to definitive restorations.[37]

Indirect restorations

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Preformed metal crowns
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Pre-formed metal crowns (PMC), also known as stainless steel crowns, can be used to reduce the risk of marginal breakdown, coronal leakage and has a good longevity.[56] The use of preformed metal crowns on MIH-affected molars can prevent further tooth loss, control hypersensitivity and aim to establish correct interproximal and occlusal contact. They are relatively inexpensive and require little preparation.[54]

To prevent further tooth preparation and tissue loss, use of the Hall Technique should also be considered.[57] There advantage is use during any stage of post-eruptive breakdown, but evidence of their efficacy is limited. Although the PMC has evidence to show that it is well accepted, a few of the children and their carers expressed their concerns about the metallic appearances of the restoration.[58]

Cast restorations
[edit]

Cast restorations may include full coverage crowns for MIH-affected permanent teeth. Generally cast restorations requiring tooth preparation are not recommended in young children due to large pulp size, short crown height and potential difficulties in obtaining a good impression for subgingival crown margins.[59]

Extractions

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Tooth extraction is one of the treatment options for MIH, especially for symptomatic cases.

A list of considerations can affect the final decision on whether extraction of the affected teeth should be carried out or should it be retained such as: severity of MIH; patient's aesthetic expectations; whether the patient is suitable to undergo orthodontic treatment; orthodontic concerns (e.g. crowding, facial profile, missing or supernumerary teeth, presence of third molars).[60] Extractions may often be the only option for molars that are severely affected and have poor prognosis.[33]

Timely extractions are often the preferred treatment plan for first permanent molars that are severely affected and symptomatic. The facilitation of eruption of the second permanent molars to the space of the first permanent molar removes the burden of continuous restorative treatment.[52]

A favourable occlusion may be acquired following a well-planned treatment and this eliminates the need for fixed orthodontic appliances therapy.[61][62] However, a comprehensive discussion of the possible need of orthodontic sequelae and treatment is important.[62]

Favorable eruption position of the second permanent molar may result if the first permanent molar is extracted when the child is at the age of between 8–10 years old. This is when the crown formation of the second permanent molar is complete and the mineralization of the bifurcation is commenced.[61]

Extraction of first permanent molars before 8 years old increases the chances of the unerupted second permanent premolar drifting distally. Extraction after the age of 10 years reduces the likelihood of the mesial movement of the second permanent molar in to the first permanent molar space and may result in tilting of the second permanent molar.[63]

Epidemiology

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Since first recognised in the late 1970s, the condition has puzzled many people. It is thought to be a unique defect unlike other enamel disturbances, e.g. fluorosis or amelogenesis imperfecta.[64]

Many prevalence studies have now been published from findings across the globe. However, there is a large amount of variation across the results of these studies. It is reported that the prevalence of MIH ranges from 13.1% to 14.2% [65][2] with an estimate of 14.2% of the global population suffering. While MIH has a high prevalence across the globe, heavily populated countries such as those with low and middle incomes carry the highest burden.[65] Worldwide there is much variation between continents with South America having the highest prevalence (18%), closely followed by Oceania (16.3%). The continent found to have least sufferers was Africa (10.9%).[2]

Multiple studies have provided evidence that there is no gender difference. However, a study by Kathmandu University reports that post eruptive breakdown occurs more frequently in boys than it does in girls.[66] A different study found that children under the age of 10 are more highly affected by the disease (15.1%) compared to older children (12.1%).[2]

References

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  1. ^ a b c d e f g Garg, Nishita; Jain, Abhay Kumar; Saha, Sonali; Singh, Jaspal (2012). "Essentiality of Early Diagnosis of Molar Incisor Hypomineralization in Children and Review of its Clinical Presentation, Etiology and Management". International Journal of Clinical Pediatric Dentistry. 5 (3): 190–196. doi:10.5005/jp-journals-10005-1164. ISSN 0974-7052. PMC 4155885. PMID 25206166.
  2. ^ a b c d e Zhao, Dongdong; Dong, Bao; Yu, Dandan; Ren, Qiongqiong; Sun, Yehuan (2017-07-21). "The prevalence of molar incisor hypomineralization: evidence from 70 studies". International Journal of Paediatric Dentistry. 28 (2): 170–179. doi:10.1111/ipd.12323. ISSN 1365-263X. PMID 28732120. S2CID 11045296.
  3. ^ Garot, E.; Rouas, P.; Somani, C.; Taylor, G. D.; Wong, F.; Lygidakis, N. A. (2021-06-24). "An update of the aetiological factors involved in molar incisor hypomineralisation (MIH): a systematic review and meta-analysis". European Archives of Paediatric Dentistry. 23 (1): 23–38. doi:10.1007/s40368-021-00646-x. ISSN 1996-9805. PMID 34164793. S2CID 235627574.
  4. ^ Taylor, Greig D. (March 2017). "Molar incisor hypomineralisation". Evidence-Based Dentistry. 18 (1): 15–16. doi:10.1038/sj.ebd.6401219. ISSN 1476-5446. PMID 28338027. S2CID 3700222.
  5. ^ Weerheijm, K. L.; Jälevik, B.; Alaluusua, S. (September 2001). "Molar-incisor hypomineralisation". Caries Research. 35 (5): 390–391. doi:10.1159/000047479. ISSN 0008-6568. PMID 11641576. S2CID 46109387.
  6. ^ a b Leal, Soraya C.; Oliveira, Tereza Raquel Mourão; Ribeiro, Ana Paula Dias (September 2017). "Do parents and children perceive molar-incisor hypomineralization as an oral health problem?". International Journal of Paediatric Dentistry. 27 (5): 372–379. doi:10.1111/ipd.12271. ISSN 1365-263X. PMID 27748991. S2CID 34634201.
  7. ^ Weerheijm, K. L. (September 2003). "Molar incisor hypomineralisation (MIH)". European Journal of Paediatric Dentistry. 4 (3): 114–120. ISSN 1591-996X. PMID 14529330.
  8. ^ a b Restrepo, Manuel; Jeremias, Fabiano; Santos-Pinto, Lourdes; Cordeiro, Rita Cl; Zuanon, Angela Cc (2016). "Effect of Fluoride Varnish on Enamel Remineralization in Anterior Teeth with Molar Incisor Hypomineralization". The Journal of Clinical Pediatric Dentistry. 40 (3): 207–210. doi:10.17796/1053-4628-40.3.207 (inactive 2024-11-08). ISSN 1053-4628. PMID 27472567.{{cite journal}}: CS1 maint: DOI inactive as of November 2024 (link)
  9. ^ Weerheijm, K. L.; Duggal, M.; Mejàre, I.; Papagiannoulis, L.; Koch, G.; Martens, L. C.; Hallonsten, A.-L. (September 2003). "Judgement criteria for molar incisor hypomineralisation (MIH) in epidemiologic studies: a summary of the European meeting on MIH held in Athens, 2003". European Journal of Paediatric Dentistry. 4 (3): 110–113. ISSN 1591-996X. PMID 14529329.
  10. ^ a b Jälevik, B.; Norén, J. G. (December 2000). "Enamel hypomineralization of permanent first molars: a morphological study and survey of possible aetiological factors". International Journal of Paediatric Dentistry. 10 (4): 278–289. doi:10.1046/j.1365-263x.2000.00210.x. ISSN 0960-7439. PMID 11310241.
  11. ^ a b Da Costa-Silva, Cristiane M.; Ambrosano, Glaucia M. B.; Jeremias, Fabiano; De Souza, Juliana F.; Mialhe, Fábio L. (September 2011). "Increase in severity of molar-incisor hypomineralization and its relationship with the colour of enamel opacity: a prospective cohort study". International Journal of Paediatric Dentistry. 21 (5): 333–341. doi:10.1111/j.1365-263X.2011.01128.x. ISSN 1365-263X. PMID 21470321.
  12. ^ Elfrink, Marlies E. C.; Schuller, Annemarie A.; Veerkamp, Jaap S. J.; Poorterman, Jan H. G.; Moll, Henriette A.; ten Cate, Bob J. M. (March 2010). "Factors increasing the caries risk of second primary molars in 5-year-old Dutch children". International Journal of Paediatric Dentistry. 20 (2): 151–157. doi:10.1111/j.1365-263X.2009.01026.x. ISSN 1365-263X. PMID 20384830.
  13. ^ a b c Silva, Mihiri J; Kilpatrick, Nicky; Crombie, Felicity; Ghanim, Aghareed; Manton, David (2017-02-02). "What's new in molar incisor hypomineralization?". Dental Update. 44 (2): 100–106. doi:10.12968/denu.2017.44.2.100. ISSN 0305-5000.
  14. ^ Fagrell, Tobias G.; Lingström, Peter; Olsson, Stina; Steiniger, Frank; Norén, Jörgen G. (2008-09-01). "Bacterial invasion of dentinal tubules beneath apparently intact but hypomineralized enamel in molar teeth with molar incisor hypomineralization". International Journal of Paediatric Dentistry. 18 (5): 333–340. doi:10.1111/j.1365-263X.2007.00908.x. ISSN 1365-263X. PMID 18328044.
  15. ^ Kopperud, Simen E.; Pedersen, Cecilie Gravdahl; Espelid, Ivar (2016-07-04). "Treatment decisions on Molar-Incisor Hypomineralization (MIH) by Norwegian dentists – a questionnaire study". BMC Oral Health. 17 (1): 3. doi:10.1186/s12903-016-0237-5. ISSN 1472-6831. PMC 4948099. PMID 27430640.
  16. ^ Ueno, Takahiro; Tsuchiya, Hironori; Mizogami, Maki; Takakura, Ko (2008-11-13). "Local anesthetic failure associated with inflammation: verification of the acidosis mechanism and the hypothetic participation of inflammatory peroxynitrite". Journal of Inflammation Research. 1: 41–48. doi:10.2147/jir.s3982. ISSN 1178-7031. PMC 3218719. PMID 22096346.
  17. ^ a b Jälevik, B.; Klingberg, G. A. (January 2002). "Dental treatment, dental fear and behaviour management problems in children with severe enamel hypomineralization of their permanent first molars". International Journal of Paediatric Dentistry. 12 (1): 24–32. doi:10.1046/j.0960-7439.2001.00318.x. ISSN 0960-7439. PMID 11853245.
  18. ^ Cabasse, C.; Marie-Cousin, A.; Huet, A.; Sixou, J. L. (March 2015). "Computer-assisted intraosseous anaesthesia for molar and incisor hypomineralisation teeth. A preliminary study". Odonto-Stomatologie Tropicale = Tropical Dental Journal. 38 (149): 5–9. ISSN 0251-172X. PMID 26058304.
  19. ^ Mastroberardino, Stefano; Campus, Guglielmo; Strohmenger, Laura; Villa, Alessandro; Cagetti, Maria Grazia (2012). "An Innovative Approach to Treat Incisors Hypomineralization (MIH): A Combined Use of Casein Phosphopeptide-Amorphous Calcium Phosphate and Hydrogen Peroxide—A Case Report". Case Reports in Dentistry. 2012: 379593. doi:10.1155/2012/379593. ISSN 2090-6447. PMC 3513726. PMID 23243519.
  20. ^ Rodd, H. D.; Abdul-Karim, A.; Yesudian, G.; O'Mahony, J.; Marshman, Z. (March 2011). "Seeking children's perspectives in the management of visible enamel defects". International Journal of Paediatric Dentistry. 21 (2): 89–95. doi:10.1111/j.1365-263X.2010.01096.x. ISSN 1365-263X. PMID 20738432.
  21. ^ Wong, F. (2004-05-22). "Research Summary: Study of enamel density". British Dental Journal. 196 (10): 625. doi:10.1038/sj.bdj.4811299. ISSN 0007-0610.
  22. ^ Fragelli, Camila Maria Bullio; Souza, Juliana Feltrin de; Jeremias, Fabiano; Cordeiro, Rita de Cássia Loiola; Santos-Pinto, Lourdes (2015). "Molar incisor hypomineralization (MIH): conservative treatment management to restore affected teeth". Brazilian Oral Research. 29: 1–7. doi:10.1590/1807-3107BOR-2015.vol29.0076. hdl:11449/127337. ISSN 1807-3107. PMID 26083091.
  23. ^ a b Weerheijm, K. L. (January 2004). "Molar incisor hypomineralization (MIH): clinical presentation, aetiology and management". Dental Update. 31 (1): 9–12. doi:10.12968/denu.2004.31.1.9. ISSN 0305-5000. PMID 15000003.
  24. ^ a b c Garot, E.; Rouas, P.; Somani, C.; Taylor, G. D.; Wong, F.; Lygidakis, N. A. (2021-06-24). "An update of the aetiological factors involved in molar incisor hypomineralisation (MIH): a systematic review and meta-analysis". European Archives of Paediatric Dentistry. 23 (1): 23–38. doi:10.1007/s40368-021-00646-x. ISSN 1818-6300. PMID 34164793.
  25. ^ Jackson, D. (1961-12-01). "A clinical study of non-endemic mottling of enamel". Archives of Oral Biology. 5 (3–4): 212–223. doi:10.1016/0003-9969(61)90059-0. ISSN 0003-9969. PMID 13957195.
  26. ^ Johnsen, D; Kreici, C; Hack, M; Fanaroff, A (January 1984). "Distribution of enamel defects and the association with respiratory distress in very low birthweight infants". Journal of Dental Research. 63 (1): 59–64. doi:10.1177/00220345840630011401. PMID 6582082. S2CID 12524702.
  27. ^ Bhaskar, ShubhaArehalli; Hegde, Sapna (2014-10-01). "Molar-incisor hypomineralization: Prevalence, severity and clinical characteristics in 8- to 13-year-old children of Udaipur, India". Journal of Indian Society of Pedodontics and Preventive Dentistry. 32 (4): 322–9. doi:10.4103/0970-4388.140960. PMID 25231041.
  28. ^ Weerheijm, K. L.; Duggal, M.; Mejàre, I.; Papagiannoulis, L.; Koch, G.; Martens, L. C.; Hallonsten, A.-L. (September 2003). "Judgement criteria for molar incisor hypomineralisation (MIH) in epidemiologic studies: a summary of the European meeting on MIH held in Athens, 2003". European Journal of Paediatric Dentistry. 4 (3): 110–113. ISSN 1591-996X. PMID 14529329.
  29. ^ Oliver, Kelly; Messer, Louise B.; Manton, David J.; Kan, Karen; Ng, Fiona; Olsen, Christopher; Sheahan, John; Silva, Margarita; Chawla, Narisha (March 2014). "Distribution and severity of molar hypomineralisation: trial of a new severity index". International Journal of Paediatric Dentistry. 24 (2): 131–151. doi:10.1111/ipd.12040. ISSN 1365-263X. PMID 23701232.
  30. ^ Ghanim, A.; Elfrink, M.; Weerheijm, K.; Mariño, R.; Manton, D. (2015-04-28). "A practical method for use in epidemiological studies on enamel hypomineralisation". European Archives of Paediatric Dentistry. 16 (3): 235–246. doi:10.1007/s40368-015-0178-8. ISSN 1818-6300. PMC 4469791. PMID 25916282. S2CID 11459679.
  31. ^ Ghanim, A.; Silva, M. J.; Elfrink, M. E. C.; Lygidakis, N. A.; Mariño, R. J.; Weerheijm, K. L.; Manton, D. J. (2017-07-18). "Molar incisor hypomineralisation (MIH) training manual for clinical field surveys and practice". European Archives of Paediatric Dentistry. 18 (4): 225–242. doi:10.1007/s40368-017-0293-9. ISSN 1818-6300. PMID 28721667. S2CID 28241130.
  32. ^ Ghanim, Aghareed; Mariño, Rodrigo; Manton, David J. (2018-10-22). "Validity and reproducibility testing of the Molar Incisor Hypomineralisation (MIH) Index". International Journal of Paediatric Dentistry. 29 (1): 6–13. doi:10.1111/ipd.12433. hdl:11343/284668. ISSN 0960-7439. PMID 30350324. S2CID 53039482.
  33. ^ a b c d e f g h i Lygidakis, N. A.; Wong, F.; Jälevik, B.; Vierrou, A.-M.; Alaluusua, S.; Espelid, I. (April 2010). "Best Clinical Practice Guidance for clinicians dealing with children presenting with Molar-Incisor-Hypomineralisation (MIH): An EAPD Policy Document". European Archives of Paediatric Dentistry. 11 (2): 75–81. doi:10.1007/BF03262716. ISSN 1818-6300. PMID 20403301. S2CID 4843003.
  34. ^ Willmott, N. S.; Bryan, R. a. E.; Duggal, M. S. (December 2008). "Molar-incisor-hypomineralisation: a literature review". European Archives of Paediatric Dentistry. 9 (4): 172–179. doi:10.1007/BF03262633. ISSN 1818-6300. PMID 19054470. S2CID 30991066.
  35. ^ Shen, P.; Cai, F.; Nowicki, A.; Vincent, J.; Reynolds, E. C. (December 2001). "Remineralization of enamel subsurface lesions by sugar-free chewing gum containing casein phosphopeptide-amorphous calcium phosphate". Journal of Dental Research. 80 (12): 2066–2070. doi:10.1177/00220345010800120801. ISSN 0022-0345. PMID 11808763. S2CID 23119816.
  36. ^ Azarpazhooh, Amir; Limeback, Hardy (July 2008). "Clinical efficacy of casein derivatives: a systematic review of the literature". Journal of the American Dental Association. 139 (7): 915–924, quiz 994–995. doi:10.14219/jada.archive.2008.0278. ISSN 0002-8177. PMID 18594077.
  37. ^ a b Somani, C.; Taylor, G. D.; Garot, E.; Rouas, P.; Lygidakis, N. A.; Wong, F. S. L. (February 2022). "An update of treatment modalities in children and adolescents with teeth affected by molar incisor hypomineralisation (MIH): a systematic review". European Archives of Paediatric Dentistry. 23 (1): 39–64. doi:10.1007/s40368-021-00635-0. PMC 8927013. PMID 34110615.
  38. ^ Lygidakis, N. A. (April 2010). "Treatment modalities in children with teeth affected by molar-incisor enamel hypomineralisation (MIH): A systematic review". European Archives of Paediatric Dentistry. 11 (2): 65–74. doi:10.1007/BF03262715. ISSN 1818-6300. PMID 20403300. S2CID 43261950.
  39. ^ Wright, J. Timothy (May 2002). "The etch-bleach-seal technique for managing stained enamel defects in young permanent incisors". Pediatric Dentistry. 24 (3): 249–252. ISSN 0164-1263. PMID 12064500.
  40. ^ Attal, Jean-Pierre; Atlan, Anthony; Denis, Maud; Vennat, Elsa; Tirlet, Gilles (March 2014). "White spots on enamel: treatment protocol by superficial or deep infiltration (part 2)" (PDF). International Orthodontics. 12 (1): 1–31. doi:10.1016/j.ortho.2013.12.011. ISSN 1879-680X. PMID 24503373.
  41. ^ a b Jälevik, B; Noren, JG (Dec 2000). "Enamel hypomineralization of permanent first molars: a morphological study and survey of possible aetiological factors". International Journal of Paediatric Dentistry. 10 (4): 278–289. doi:10.1046/j.1365-263x.2000.00210.x. PMID 11310241.
  42. ^ Fayle, S. A. (September 2003). "Molar incisor hypomineralisation: restorative management". European Journal of Paediatric Dentistry. 4 (3): 121–126. ISSN 1591-996X. PMID 14529331.
  43. ^ Joiner, Andrew (August 2006). "The bleaching of teeth: a review of the literature". Journal of Dentistry. 34 (7): 412–419. doi:10.1016/j.jdent.2006.02.002. ISSN 0300-5712. PMID 16569473.
  44. ^ Wray, A.; Welbury, R.; Faculty of Dental Surgery, Royal College of Surgeons (July 2001). "UK National Clinical Guidelines in Paediatric Dentistry: Treatment of intrinsic discoloration in permanent anterior teeth in children and adolescents". International Journal of Paediatric Dentistry. 11 (4): 309–315. doi:10.1046/j.1365-263X.2001.00300.x. ISSN 0960-7439. PMID 11570449.
  45. ^ Wong, F. S. L.; Winter, G. B. (2002-08-10). "Effectiveness of microabrasion technique for improvement of dental aesthetics". British Dental Journal. 193 (3): 155–158. doi:10.1038/sj.bdj.4801511. ISSN 0007-0610. PMID 12213009.
  46. ^ Sapir, Shabtai; Shapira, Joseph (July 2007). "Clinical solutions for developmental defects of enamel and dentin in children". Pediatric Dentistry. 29 (4): 330–336. ISSN 0164-1263. PMID 17867401.
  47. ^ Welbury, R. R. (April 1991). "A clinical study of a microfilled composite resin for labial veneers". International Journal of Paediatric Dentistry. 1 (1): 9–15. doi:10.1111/j.1365-263X.1991.tb00315.x. ISSN 0960-7439. PMID 1931891.
  48. ^ a b Lygidakis, N. A.; Dimou, G.; Stamataki, E. (December 2009). "Retention of fissure sealants using two different methods of application in teeth with hypomineralised molars (MIH): a 4 year clinical study". European Archives of Paediatric Dentistry. 10 (4): 223–226. doi:10.1007/BF03262686. ISSN 1818-6300. PMID 19995506. S2CID 6273306.
  49. ^ a b c Kotsanos, N.; Kaklamanos, E. G.; Arapostathis, K. (December 2005). "Treatment management of first permanent molars in children with Molar-Incisor Hypomineralisation". European Journal of Paediatric Dentistry. 6 (4): 179–184. ISSN 1591-996X. PMID 16426116.
  50. ^ Gandhi, Shan; Crawford, Peter; Shellis, Peter (November 2012). "The use of a 'bleach-etch-seal' deproteinization technique on MIH affected enamel". International Journal of Paediatric Dentistry. 22 (6): 427–434. doi:10.1111/j.1365-263X.2011.01212.x. ISSN 1365-263X. PMID 22251382.
  51. ^ Mathu-Muju, Kavita; Wright, J. Timothy (November 2006). "Diagnosis and treatment of molar incisor hypomineralization". Compendium of Continuing Education in Dentistry. 27 (11): 604–610, quiz 611. ISSN 1548-8578. PMID 17133930.
  52. ^ a b Mejàre, I.; Bergman, E.; Grindefjord, M. (January 2005). "Hypomineralized molars and incisors of unknown origin: treatment outcome at age 18 years". International Journal of Paediatric Dentistry. 15 (1): 20–28. doi:10.1111/j.1365-263X.2005.00599.x. ISSN 0960-7439. PMID 15663441.
  53. ^ Lygidakis, N. A.; Chaliasou, A.; Siounas, G. (September 2003). "Evaluation of composite restorations in hypomineralised permanent molars: a four year clinical study". European Journal of Paediatric Dentistry. 4 (3): 143–148. ISSN 1591-996X. PMID 14529336.
  54. ^ a b William, Vanessa; Burrow, Michael F.; Palamara, Joseph E. A.; Messer, Louise B. (May 2006). "Microshear bond strength of resin composite to teeth affected by molar hypomineralization using 2 adhesive systems". Pediatric Dentistry. 28 (3): 233–241. ISSN 0164-1263. PMID 16805355.
  55. ^ Fayle, S. A. (September 2003). "Molar incisor hypomineralisation: restorative management". European Journal of Paediatric Dentistry. 4 (3): 121–126. ISSN 1591-996X. PMID 14529331.
  56. ^ Zagdwon, A. M.; Fayle, S. A.; Pollard, M. A. (September 2003). "A prospective clinical trial comparing preformed metal crowns and cast restorations for defective first permanent molars". European Journal of Paediatric Dentistry. 4 (3): 138–142. ISSN 1591-996X. PMID 14529335.
  57. ^ Innes, N. P. T.; Stirrups, D. R.; Evans, D. J. P.; Hall, N.; Leggate, M. (2006-04-22). "A novel technique using preformed metal crowns for managing carious primary molars in general practice - a retrospective analysis". British Dental Journal. 200 (8): 451–454, discussion 444. doi:10.1038/sj.bdj.4813466. ISSN 0007-0610. PMID 16703041.
  58. ^ Bell, S. J.; Morgan, A. G.; Marshman, Z.; Rodd, H. D. (October 2010). "Child and parental acceptance of preformed metal crowns". European Archives of Paediatric Dentistry. 11 (5): 218–224. doi:10.1007/BF03262750. ISSN 1818-6300. PMID 20932394. S2CID 25221028.
  59. ^ Koch, M. J.; García-Godoy, F. (September 2000). "The clinical performance of laboratory-fabricated crowns placed on first permanent molars with developmental defects". Journal of the American Dental Association. 131 (9): 1285–1290. doi:10.14219/jada.archive.2000.0382. ISSN 0002-8177. PMID 10986829.
  60. ^ Leen A, "The interrelationship between molar hypomineralisation and orthodontics [Thesis]," The University of Melbourne, Melbourne, 2013.
  61. ^ a b Jälevik, Birgitta; Möller, Marie (September 2007). "Evaluation of spontaneous space closure and development of permanent dentition after extraction of hypomineralized permanent first molars". International Journal of Paediatric Dentistry. 17 (5): 328–335. doi:10.1111/j.1365-263X.2007.00849.x. ISSN 0960-7439. PMID 17683321.
  62. ^ a b Gill, D. S.; Lee, R. T.; Tredwin, C. J. (July 2001). "Treatment planning for the loss of first permanent molars". Dental Update. 28 (6): 304–308. doi:10.12968/denu.2001.28.6.304. ISSN 0305-5000. PMID 11526884.
  63. ^ Sandler, P. J.; Atkinson, R.; Murray, A. M. (April 2000). "For four sixes". American Journal of Orthodontics and Dentofacial Orthopedics. 117 (4): 418–434. doi:10.1016/S0889-5406(00)70161-2. ISSN 0889-5406. PMID 10756267.
  64. ^ Jälevik, B. (2010-04-01). "Prevalence and Diagnosis of Molar-Incisor-Hypomineralisation (MIH): A systematic review". European Archives of Paediatric Dentistry. 11 (2): 59–64. doi:10.1007/BF03262714. ISSN 1818-6300. PMID 20403299. S2CID 30640440.
  65. ^ a b Schwendicke, Falk; Elhennawy, Karim; Reda, Seif; Bekes, Katrin; Manton, David J; Krois, Joachim (January 2018). "Global burden of molar incisor hypomineralization". Journal of Dentistry. 68: 10–18. doi:10.1016/j.jdent.2017.12.002. PMID 29221956.
  66. ^ Shrestha, R.; Upadhaya, S.; Bajracharya, M. (January 2014). "Prevalence of molar incisor hypomineralisation among school children in Kavre". Kathmandu University Medical Journal. 12 (45): 38–42. doi:10.3126/kumj.v12i1.13631. ISSN 1812-2078. PMID 25219992.
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