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Molar incisor hypomineralization: Analysis of asymmetry of lesions.
Acta Odontol Latinoam. 2019 Apr 01; 32(1):44-48.AO

Abstract

Clinically, Molar-Incisor Hypomineralization (MIH) lesions are not distributed symmetrically, and their severity varies even within the same arcade.

AIM

To estimate the frequency of asymmetries in hypomineralized lesions on permanent molars and incisors of children with MIH.

METHODS

Three pediatric dentists, calibrated following the diagnostic criteria of Mathu-Muju and Wright (2006) (Kappa 0.87) identified presence and severity of opacities on molars and incisors of patients with MIH. Six pairs of teeth (permanent maxillary and mandibular first molars, central and lateral incisors) were evaluated in each patient. Degree of lesion severity (0-none, 1-mild, 2-moderate, 3-severe) was recorded for each tooth. For each pair containing any affected teeth, asymmetry of presence (one tooth in the pair with lesion and the other intact), asymmetry of severity (both teeth with lesions but with different degrees of severity) or symmetry of severity (both affected teeth with the same degree of severity) were evaluated. The recorded values were entered into a database to calculate percentages, 95% confidence intervals and Chi-Square test for comparisons.

RESULTS

The sample consisted of475 of the 1032 pairs of teeth evaluated in the 172 patients included in the study, mean age 11±2.2 years, and 50% female. Asymmetry was found for 67.5% (63.1 - 71.7) of the pairs of the studied teeth. There was a significant relationship between asymmetries and symmetries (p=0.038). A total 50.1% of the pairs were asymmetrical for presence of opacities. Of these, 62.2% scored severity 1 (mild). Symmetry of severity was found for 32.5% of the lesions. Among the pairs of affected teeth, the most frequently observed degrees of lesion severity were mild and moderate, with the exception of lower molars, in which 49% had severe lesions.

CONCLUSIONS

In this study, MIH lesions were asymmetrical both in presence and severity for all tooth types.

Authors+Show Affiliations

Universidad de Buenos Aires, Facultad de Odontología, Cátedra Odontología Integral Niños. Buenos Aires, Argentina. pediat@odon.uba.ar.Universidad de Buenos Aires, Facultad de Odontología, Cátedra Odontología Integral Niños. Buenos Aires, Argentina.Universidad de Buenos Aires, Facultad de Odontología, Cátedra Odontología Integral Niños. Buenos Aires, Argentina.Universidad de Buenos Aires, Facultad de Odontología, Cátedra Odontología Integral Niños. Buenos Aires, Argentina.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

31206574

Citation

Biondi, Ana M., et al. "Molar Incisor Hypomineralization: Analysis of Asymmetry of Lesions." Acta Odontologica Latinoamericana : AOL, vol. 32, no. 1, 2019, pp. 44-48.
Biondi AM, Córtese SG, Babino L, et al. Molar incisor hypomineralization: Analysis of asymmetry of lesions. Acta Odontol Latinoam. 2019;32(1):44-48.
Biondi, A. M., Córtese, S. G., Babino, L., & Toscano, M. A. (2019). Molar incisor hypomineralization: Analysis of asymmetry of lesions. Acta Odontologica Latinoamericana : AOL, 32(1), 44-48.
Biondi AM, et al. Molar Incisor Hypomineralization: Analysis of Asymmetry of Lesions. Acta Odontol Latinoam. 2019 Apr 1;32(1):44-48. PubMed PMID: 31206574.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Molar incisor hypomineralization: Analysis of asymmetry of lesions. AU - Biondi,Ana M, AU - Córtese,Silvina G, AU - Babino,Lucía, AU - Toscano,Marina A, PY - 2019/03/01/received PY - 2019/04/01/accepted PY - 2019/6/18/entrez PY - 2019/6/18/pubmed PY - 2019/11/15/medline KW - Dental enamel KW - Molar incisor hypomineralization KW - Tooth abnormalities SP - 44 EP - 48 JF - Acta odontologica latinoamericana : AOL JO - Acta Odontol Latinoam VL - 32 IS - 1 N2 - : Clinically, Molar-Incisor Hypomineralization (MIH) lesions are not distributed symmetrically, and their severity varies even within the same arcade. AIM: To estimate the frequency of asymmetries in hypomineralized lesions on permanent molars and incisors of children with MIH. METHODS: Three pediatric dentists, calibrated following the diagnostic criteria of Mathu-Muju and Wright (2006) (Kappa 0.87) identified presence and severity of opacities on molars and incisors of patients with MIH. Six pairs of teeth (permanent maxillary and mandibular first molars, central and lateral incisors) were evaluated in each patient. Degree of lesion severity (0-none, 1-mild, 2-moderate, 3-severe) was recorded for each tooth. For each pair containing any affected teeth, asymmetry of presence (one tooth in the pair with lesion and the other intact), asymmetry of severity (both teeth with lesions but with different degrees of severity) or symmetry of severity (both affected teeth with the same degree of severity) were evaluated. The recorded values were entered into a database to calculate percentages, 95% confidence intervals and Chi-Square test for comparisons. RESULTS: The sample consisted of475 of the 1032 pairs of teeth evaluated in the 172 patients included in the study, mean age 11±2.2 years, and 50% female. Asymmetry was found for 67.5% (63.1 - 71.7) of the pairs of the studied teeth. There was a significant relationship between asymmetries and symmetries (p=0.038). A total 50.1% of the pairs were asymmetrical for presence of opacities. Of these, 62.2% scored severity 1 (mild). Symmetry of severity was found for 32.5% of the lesions. Among the pairs of affected teeth, the most frequently observed degrees of lesion severity were mild and moderate, with the exception of lower molars, in which 49% had severe lesions. CONCLUSIONS: In this study, MIH lesions were asymmetrical both in presence and severity for all tooth types. SN - 1852-4834 UR - https://www.unboundmedicine.com/medline/citation/31206574/Molar_incisor_hypomineralization:_Analysis_of_asymmetry_of_lesions_ L2 - http://www.scielo.org.ar/pdf/aol/v32n1/v32n1a07.pdf DB - PRIME DP - Unbound Medicine ER -