Three-Dimensional Analysis of Posterior Mandibular Displacement in Rats.
class III malocclusion
condylar growth
mandibular growth
mandibular length
mandibular posterior displacement
orthodontic treatment
rat
Journal
Veterinary sciences
ISSN: 2306-7381
Titre abrégé: Vet Sci
Pays: Switzerland
ID NLM: 101680127
Informations de publication
Date de publication:
20 Mar 2022
20 Mar 2022
Historique:
received:
06
02
2022
revised:
15
03
2022
accepted:
18
03
2022
entrez:
24
3
2022
pubmed:
25
3
2022
medline:
25
3
2022
Statut:
epublish
Résumé
Mandibular protrusion and its treatment is challenging for the orthodontist. The aim of the present research was to identify macroscopic changes in the mandible, based on three-dimensional Cone Beam Computed Tomography analysis. Seventy-two male Wistar rats were divided into two equal groups, experimental (group A) and control (group B). Each consisted of three equal subgroups of 12 rats (A1, A2, A3, B1, B2, B3). Full-cast orthodontic intraoral devices were attached to the maxillary incisors of the experimental animals, and effected functional posterior mandibular displacement. Throughout the experimental period, all animals were fed with mashed food. Animals were sacrificed at 30 days (A1, B1), 60 days (A2, B2) and 90 days (A3, B3). At the 60th day of the experiment, the orthodontic devices were removed from the remaining experimental subgroup A3. Measurements revealed significant differences in the anteroposterior dimensions between experimental and control subgroups. However, the observed changes in the vertical dimensions, Condylion/Go'-Menton and the Intercondylar distance proved insignificant. Posterior mandibular displacement of the mandible in growing rats affects the morphology of the mandible and culminates in the development of a smaller mandible at a grown age.
Identifiants
pubmed: 35324872
pii: vetsci9030144
doi: 10.3390/vetsci9030144
pmc: PMC8953185
pii:
doi:
Types de publication
Journal Article
Langues
eng
Subventions
Organisme : National and Kapodistrian University of Athens
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