Position of impacted mandibular third molar in different skeletal facial types: First radiographic evaluation in a group of Iranian patients
Imaging Science in Dentistry
;
: 61-65, 2014.
Article
Dans Anglais
| WPRIM
| ID: wpr-12988
ABSTRACT
PURPOSE:
This study was performed to evaluate the position of impacted mandibular third molars in different skeletal facial types among a group of Iranian patients. MATERIALS ANDMETHODS:
A total of 400 mandibular third molars in 200 subjects with different types of facial growth were radiographically investigated for their positions according to their types of facial growth on the basis of the beta angle. The subjects were divided into three groups (class I, II, and III) according to ANB angle, representing the anteroposterior relationship of the maxilla to the mandible. Meanwhile, the subjects were also divided into three groups (long, normal, and short face) according to the angle between the stella-nasion and mandibular plane (SNGoGn angle). ANOVA was used for statistical analysis.RESULTS:
The mean beta angle showed no significant difference among class I, II, and III malocclusions (df=2, F=0.669, p=0.513). The same results were also found in short, normal, and long faces (df=1.842, F=2, p=0.160). The mesioangular position was the most frequent one in almost all of the facial growth patterns. Distoangular and horizontal positions of impaction were not found in the subjects with class III and normal faces. In the long facial growth pattern, the frequency of vertical and distoangular positions were not different.CONCLUSION:
In almost all of the skeletal facial types, the mesioangular impaction of the mandibular third molar was the most prevalent position, followed by the horizontal position. In addition, beta angle showed no significant difference in different types of facial growth.
Texte intégral:
Disponible
Indice:
WPRIM (Pacifique occidental)
Sujet Principal:
Dent enclavée
/
Malocclusion dentaire
/
Mandibule
/
Maxillaire
/
Dent de sagesse
Limites du sujet:
Humains
langue:
Anglais
Texte intégral:
Imaging Science in Dentistry
Année:
2014
Type:
Article
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