Maxillary and Mandibular Dentoalveolar Heights of French-Canadians 10 to 15 Years of Age

Abstract

Objective: To establish reference data for anterior and posterior dentoalveolar heights of growing French-Canadians with untreated normal occlusions and malocclusions. Materials and Methods: The mixed longitudinal sample includes 227 French-Canadians, 119 male and 108 female, with cephalograms taken annually between 10-15 years of age. Maxillary and mandibular dentoalveolar heights were measured as the perpendicular distances of the incisor tips and first molar mesial cusp tips to the palatal (ANS-PNS) and mandibular (Go-Me) planes. Results: Male dentoalveolar heights were significantly (P Ͻ .05) greater than female heights at all ages. Dentoalveolar heights at 15 years of age were significantly larger (P Ͻ .05) than at 10 years of age, with differences ranging from 2.1-4.2 mm in male subjects and from 2.1-3.8 mm in female subjects. The greatest difference in dentoalveolar heights between the 10-and 15-yearold age groups was for the maxillary first molar; the maxillary central incisor height showed the smallest age effects. The coefficients of variation were greater for the maxillary than the mandibular dentoalveolar heights. Correlations of dentoalveolar heights within jaws ranged from 0.53 to 0.82; correlations between jaws ranged from 0.30 to 0.44. The mandibular heights showed the strongest associations. Conclusions: French-Canadian adolescents require age-and sex-specific reference data for dentoalveolar heights.

Association of Anterior Alveolar Dimensions with Different Sagittal Jaw Relationships

“…11 In a few of the examinations, the lateral cephalograms, alveolar height and the zone dimensions have been applied for the purpose of observing the anterior alveolar-basal-mixillar cross-section as well as the mandible. 11,[15][16][17] Only a small number of research have employed 3-D data to assess the alveolar bone morphology, and the majority of these investigations have focused on the front part of the mandible or the maxilla. [18][19][20] In In this study sagittal class II and III were significantly associated with female gender 0.021, while class I was linked to male gender p-value 0.021.…”

Evaluación Cefalométrica De La Población Mestiza Colombiana Entre 6 a 12 Años

“…16,17 Dentoalveolar height increases from the age of 10 years, which shows the high correlation with various changes in growth of anterior facial height (AFH) and posterior facial height (PFH). 18 When evaluating the mandibular plane angle (Go-Me) with the (S-N) plane, a peak in values can be observed between the ages of 11 and 12 years, which may be due to the reduced number of cases evaluated at this age, and mainly occurs in patients with increased AFH; this is different from the behavior of this measure in the general population, in which it decreases over the course of life. 19 The maxillomandibular measurements evaluated in the anteroposterior plane show the same growth tendency in maxilla and mandible between the ages of 6 and 12 years, with no growth peaks, unlike other studies that do report peaks.…”

Association between Anterior Alveolar Dimensions and Different Vertical Facial Patterns

“…13 For observations of the anterior alveolar-basal-maxillary cross-section and the mandible, alveolar height, lateral cephalograms and zone dimensions, were utilized in some tests. 13,[14][15][16] Only limited studies have used 3-D data to test morphology of alveolar bone and have primarily studied the mandible or the maxilla's anterior region. [17][18][19] In this study mean upper posterior alveolus width was significantly higher in the short face of vertical facial pattern, and mean of upper anterior alveolus height was higher in long face of vertical facial pattern, p-values 0.018 and 0.001 respectively.…”

“…The vertical face pattern was calculated from TFH i.e., the LAFH and TAFH ratio, as per the criteria given below: Average face (Subjects with LAFHTAFH ratio of 56% -58%), short face (Subjects with LAFH-TAFH ratio of <55%) and long face (Subjects with LAFHTAFH ratio of >59%) Measuring the dimensions of anterior alveolus was followed by using the method described by Handelman. 14 This study includes pre-treatment digital lateral cephalometric radiographs. The lateral cephalometric radiograph was taken with patients Frankfort horizontal plane parallel to floor, lips at rest and mandible in centric occlusion.…”