Remodeling of the antegonial angle region in the human mandible: A panoramic radiographic cross-sectional study

Abstract

Objectives: This study analyzed changes in the antegonial region in relation to age, gender, and dental status. Study design: A total of one thousand patients (five hundred males and five hundred females), who were prescribed panoramic radiograph for various purposes were included in the study. The patients were categorized according to age, gender and dentition status. Panoramic radiographs were traced and antegonial angles and depths were measured. Results: A trend of decrease in the antegonial angle and increase in antegonial depth with age was observed in both males and females. Furthermore there were differences between right and left side antegonial angle and depth, with left side angle more than right and right side depth more than left. There was a significant decrease in the values of antegonial angle and significant increase in the values of antegonial depth as the dentition status changed from completely dentulous to partially dentulous and from partially dentulous to completely edentulous state. Conclusions: The antegonial angle decreases with the advancing age and thereby increases the antegonial depth. Similar trends are seen when teeth are lost. Furthermore there is an inherent asymmetry in the antegonial region in right and left side.

The Morphological Changes in the Mandible Bone: The Effects of Age, Gender and Dental Status

“…With respect to AGD, females had smaller values as compared to males. Our findings were similar to those obtained in different studies by other investigators (5,9,25,31). In this study, there was a statistically significant decline in the value of AGA with decreasing number of teeth in only females and we didn't find any significant differences for the AGD in both sexes related dental status.…”

“…In males, 41-55 age group had significantly greater AGD than the other age groups. This finding is contrast to some reports (5,9). In the study of Dutra et al (9), the distribution of gender was not homogen and above 40 years old was individuals were not included.…”

“…In this study, there was a statistically significant decline in the value of AGA with decreasing number of teeth in only females and we didn't find any significant differences for the AGD in both sexes related dental status. It was reported different findings about the effect of teeth number on AGA and AGD (5,9,31). However, the reliable comparison of the previous results between the findings of this study can't be possible due to many important differences such as grouping of dental status, radiographic method used and sample size.…”

“…In the literature, most authors who have studied mandibular remodeling have used panoramic radiographs for morphometric evaluations (3)(4)(5)9,11,(22)(23)(24)(25). In the present study, it was used to obtain these measurements, too.…”

“…Mandibular stimulies are present from the development stage to adulthood and can change the growth of the mandible, along with its bone remodeling. Some of the prominent changes that have been suggested are the change in the gonial, antegonial, condylar, ramus regions (2)(3)(4)(5).…”