Tooth size and morphology in twins

Kabban, M.; Fearne, Janice M.; Jovanovski, Vlatko; Zou, Lifong

doi:10.1046/j.0960-7439.2001.00289.x

Cited by 46 publications

(44 citation statements)

References 8 publications

(8 reference statements)

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“…A similar study on occlusal surface morphology has been performed on the occlusal surface of nine pairs of permanent molars [Kabban et al, 2001]. Three pairs were from MZ twins, four pairs from DZ twins and two from unrelated controls.…”

Section: Discussionmentioning

confidence: 99%

“…In a study of 34 pairs of twins, it was shown that the mesiodistal dimension for all permanent teeth in MZ twins was more concordant than in DZ twins [Kabban et al, 2001]. Studies by Townsend and collaborators indicated a high phenotypic variation of intercuspal distance with moderate genetic influence [Townsend et al, 2003].…”

Section: Introductionmentioning

confidence: 99%

“…Morphological features such as the Carabelli's trait were found to have higher concordance in MZ twins than in dizygotic twins [Biggerstaff, 1973;Boraas et al, 1988]. Only one study has provided detailed mappings of the occlusal surface topography of first permanent molars of identical and fraternal twins and of singletons [Kabban et al, 2001]. That study, however, only examined 9 pairs of maxillary first molars and concluded that a significant genetic contribution to occlusal topography was apparent.…”

Section: Introductionmentioning

confidence: 99%

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Inheritance of Occlusal Topography: A Twin Study

Corby

Elliot

et al. 2008

Eur Arch Paediatr Dent

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Aim-This was to determine the relative contribution of genetic factors on the morphology of occlusal surfaces of mandibular primary first molars by employing the twin study model. Methods-The occlusal morphology of mandibular primary first molar teeth from dental casts of 9 monozygotic (MZ) twin pairs and 12 dizygotic (DZ) twin pairs 4 to 7 years old, were digitized by contact-type three-dimensional (3D) scanner. To compare the similarity of occlusal morphology between twin sets, each twin pair of occlusal surfaces was superimposed to establish the best fit by using computerized least squared techniques. Heritability was computed using a variance component model, adjusted for age and gender.Results-DZ pairs demonstrated a greater degree of occlusal morphology variance. The total amount of difference in surface overlap was 0.0508 mm (0.0018 (inches) for the MZ (n=18) sample and 0.095 mm (0.0034 inches) for the DZ (n=24) sample and were not statistically significant (p=0.2203). The transformed mean differences were not statistically significantly different (p=0.2203). Heritability estimates of occlusal surface areas for right and left mandibular primary first molars were 97.5% and 98.2% (p<0.0001), respectively.Conclusions-Occlusal morphology of DZ twin pairs was more variable than that of MZ twin pairs. Heritability estimates revealed that genetic factors strongly influence occlusal morphology of mandibular primary first molars.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Inheritance of Occlusal Topography: A Twin Study

Corby

Elliot

et al. 2008

Eur Arch Paediatr Dent

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“…La morphologie des surfaces occlusales serait fortement sous influence génétique [23,58,59], la similarité de taille et de contours, analysée par informatique et traitement statistique, montrant une nette différence dans la comparaison de jumeaux MZ avec des jumeaux DZ et des sujets non apparentés [21]. Certaines particularités anatomiques (tubercule de Carabelli, taurodontisme, talon cingulaire) ou des anomalies morphologiques (gemination, fusion, dens in dente, dent conoïde.…”

Section: Anomalies De Morphologieunclassified

Jumeaux et héritabilité des phénotypes dento-faciaux

Cohen-Lévy

Kamoun-Goldrat²,

Simon³

et al. 2007

Orthod Fr

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RÉSUMÉ -En orthopédie dento-faciale, où facteurs génétiques et environnementaux s'interpénètrent depuis les premières phases du développement, le clinicien cherche à déterminer dans quelle mesure sa thérapeutique pourra influencer le schéma de croissance des patients. L'étude des jumeaux monozygotes (MZ) et dizygotes (DZ), dans leurs ressemblances, mais également dans leurs différences, apporte des éléments de réponse. . . mais soulève également de nombreuses questions. Nous reprenons dans cet article des études cliniques et des rapports de cas sur les aspects diagnostiques et thérapeutiques des malocclusions. MOTS CLÉS -Jumeaux / Génétique / Malocclusions / OrthodontieABSTRACT -In orthodontics and dentofacial orthopaedics, where genetic and environmental factors interpenetrate from the early stages of development, the clinician tries to determine how mechanics could influence patient's growth pattern. Comparing monozygotic and dizygotic twins, in their similarities and their differences, gives some answers... but raises some questions too. In this article, we gather some clinical studies and case reports, on diagnosis and treatment aspects of malocclusions.

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“…With surface form (shape) measurements, Co-ordinate Measuring Machines (CMMs) are more suited for the inspection of automotive parts in industry since the 1950's (Bosch, 1995). Since the late 90's, along with the development of new technology in optics and computing, numerous applications have been advanced in the fields of medicine and dentistry (Chadwick, 1989;Seymour et al 1996;Kabban, et al 2001;Zou, et al , 2009Cherukara GP et al 2002;Theocharopoulos et al, 2010;Morris et al 2011 ).…”

Section: Proposed Alternativementioning

confidence: 99%