1Faculty of Dentistry, AIMST University, Bedong08100, Kedah, Malaysia
2PEOPLE’S College of Dental Sciences and Research Centre, PEOPLE’S UniversityBhopal, MPIndia
*Corresponding Author E-mail: mbjeevan@gmail.com
Online Published on 17 October, 2023.
The third molar in permanent dentition is the last tooth to be erupted, the lack of space causes uneruption.
To determine the difference in various variables between erupted and impacted lower third molar group.
Quasy experimental study done at the AIMST Dental Institute, comprised 200 patients OPG’s were divided into two groups; Group A - erupted, while Group B - impacted mandibular third molars.
The third molar angulation in group A was 84.32 ± 11.59 and group B 64.15 ± 30.92 with P value 0.000. The Mesioangular slope of the third molar in group A was 7.14± 9.64 and group B 29.54 ± 35.77 with P value 0.000. The second molar angulation in group A was 88.32 ± 7.59 and group B 86.58± 15.06 with P value 0.302. Gonial angle in group A was 123.02 ± 7.60 and group B 120.08 ± 8.3 with P value 0.010. The third molar mesio-distal crown width in group A was 14.15 ± 1.28 and group B 14.47 ± 1.17 with P value 0.067. Retromolar space in group A was 19.09 ± 2.97 and group B 13.54± 2.96 with P value 0.000. The anterior-posterior distance of the arch of the erupted third molar in group A was 58.88 ±6.23 and group B 62.31 ± 5.75 with P value 0.007.
The impaction of third molar is greatly associated with angulation of third molar, mesioangular slope of the third molar and retromolar space.
OPG, Impaction, Third Molar, Parameters, Retrospective
