Dentofacial characteristics and age in association with incisor bony support in adult female patients with bimaxillary dentoalveolar protrusion

et al. 2022

Sci Rep

The purpose of this study was to compare the difference of alveolar bone remodeling between the adolescents and adults in the maxillary incisor area during retraction. This retrospective study included 72 female patients who needed moderate anchorage to correct the bimaxillary protrusion. Subjects were further divided into the minor group (n = 36, 11–16 years old) and adult group (n = 36, 18–35 years old). Digital lateral cephalography and cone beam CT scanning were taken in each patient before (T0) and after treatment (T1). Cephalometry was conducted to assess incisor retraction, while alveolar bone thickness (ABT), alveolar bone distance (ABD), and alveolar bone area (ABA) were detected to assess changes in the alveolar bone. No difference in the inclination of upper incisors was observed at both T0 and T1 between two groups. Changes in the alveolar bone showed a similar tendency with bone apposition on the labial side and bone resorption on the palatal side in both groups. Less increase in the labial ABT (T1–T0) and more decrease in the palatal ABT (T1–T0) was found in the adult group, leading to less total ABT in the adult group. Higher reduction in ABD (T1–T0) was found in the adult group. Moreover, more decrease in the ABA (T1–T0) was found in the adult group. Adult patients have less alveolar bone support after treatment when compared with young adolescents. Orthodontists should take the age into consideration to reduce the potential periodontal risks during the treatment planning.

Section: Introductionmentioning

confidence: 99%

Difference in the alveolar bone remodeling between the adolescents and adults during upper incisor retraction: a retrospective study

et al. 2022

Sci Rep

“…Bimaxillary protrusion is a common malocclusion deformity in Asia. Incisor retraction is often required to reduce the protrusion of lips as well as incisors [7] . The retraction of the anterior teeth may improve facial appearance, whereas it might bring about the risk of alveolar bone resoption and gingival recession, posing a huge challenge to the patient's periodontal health [8][9][10] .…”

mentioning

confidence: 99%

Difference in the Alveolar Bone Remodeling Between the Adolescents and Adults During Upper Incisor Retraction: A Retrospective Study

et al. 2022

Preprint

Backgroud: The purpose of this study was to compare the difference of alveolar bone remodeling between the adolescents and adults in the maxillary incisor area during retraction. Methods: This retrospective study included 72 female patients who needed moderate anchorage to correct the bimaxillary protrusion. Subjects were further divided into the minor group (n=36, 11-16 years old) and adult group (n=36, 18-35 years old). Digital lateral cephalography and cone beam CT scanning were taken in each patient before (T0) and after treatment (T1). Cephalometry was conducted to assess incisor retraction, while alveolar bone thickness (ABT), alveolar bone distance (ABD, and alveolar bone area (ABA) were detected to assess changes in the alveolar bone. Results: No difference in the inclination of upper incisors was observed at both T0 and T1. Changes in the alveolar bone showed a similar tendency with bone apposition on the labial side and resorption on the palatal side. Less increase in the labial ABT (T1-T0) and more decrease in the palatal ABT (T1-T0) was found in the adult group, leading to less total ABT in the adult group. Higher reduction inn ABD (T1-T0) was found in the adult group. Moreover, more decrease in the ABA (T1-T0) was found in the adult group. Conclusion: When compared adolescents, adult patients have less alveolar bone support after orthodontic treatment, showing a through-the-bone remodeling pattern. Orthodontic should take the age into consideration to reduce the potential periodontal risks during treatment planning.

mentioning

confidence: 99%

Difference in the Alveolar Bone Remodeling Between the Adolescents and Adults During Upper Incisor Retraction: a Retrospective Study

et al. 2021

Preprint

Background: The purpose of this study was to compare the difference of alveolar bone remodeling between the adolescents and adults in the maxillary incisor area during retraction. Methods: This retrospective study included 72 female patients who needed moderate anchorage to correct the bimaxillary protrusion. Subjects were further divided into the minor group (n=36, 11-16 years old) and adult group (n=36, 18-35 years old). Digital lateral cephalography and cone beam CT scanning were taken in each patient before (T0) and after treatment (T1). Cephalometry was conducted to assess incisor retraction, while alveolar bone thickness (ABT), alveolar bone distance (ABD, and alveolar bone area (ABA) were detected to assess changes in the alveolar bone. Results: No difference in the inclination of upper incisors was observed at both T0 and T1. Changes in the alveolar bone showed a similar tendency with bone apposition on the labial side and resorption on the palatal side. Less increase in the labial ABT (T1-T0) and more decrease in the palatal ABT (T1-T0) was found in the adult group, leading to less total ABT in the adult group. Higher reduction inn ABD (T1-T0) was found in the adult group. Moreover, more decrease in the ABA (T1-T0) was found in the adult group. Conclusion: When compared adolescents, adult patients have less alveolar bone support after orthodontic treatment, showing a through-the-bone remodeling pattern. Orthodontic should take the age into consideration to reduce the potential periodontal risks during treatment planning.