CC BY-NC-ND 4.0 · Eur J Dent 2014; 08(02): 178-183
DOI: 10.4103/1305-7456.130595
Original Article
Dental Investigation Society

Effects of early unilateral mandibular first molar extraction on condylar and ramal vertical asymmetry

Koray Halicioglu
1   Department of Orthodontics, Faculty of Dentistry, Abant Izzet Baysal University, Bolu, Turkiye
,
Mevlut Celikoglu
2   Department of Orthodontics, Faculty of Dentistry, Karadeniz Technical University, Trabzon, Turkiye
,
Suleyman K. Buyuk
3   Department of Orthodontics, Faculty of Dentistry, Erciyes University, Kayseri, Turkiye
,
Ahmet E. Sekerci
4   Department of Oral and Maxillofacial Radiology, Faculty of Dentistry, Erciyes University, Kayseri, Turkiye
,
Celal Candirli
5   Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Karadeniz Technical University, Trabzon, Turkiye
› Author Affiliations
Further Information

Publication History

Publication Date:
24 September 2019 (online)

ABSTRACT

Objective: The objective of the following study is to investigate the mandibular vertical asymmetry in a group of patients with early unilateral mandibular first molar extractions. Materials and Methods: Mandibular asymmetry index measurements (condylar, ramal and condylar-plus-ramal) were performed on the panoramic radiographs of a study group including 51 patients (mean age: 18.60 ± 1.11 years) and a control group of 51 patients (mean age: 18.53 ± 1.29 years). Group I included patients with a unilateral mandibular first molar extracted before the age of 12 years. Group II included patients with no extractions and had excellent Class I relationships, no missing teeth and slight or moderate anterior crowding. A paired t-test was used to determine possible statistically significant differences between the sides for the measurements. Student's t-test was used for the comparison of asymmetry index values between the groups and genders. Results: No group showed statistically significant sex-or side-specific differences for posterior vertical height measurements. Condylar asymmetry index and ramal asymmetry index measurements were not statistically different between the groups, while condylar-plus-ramal asymmetry index (CRAI) measurements were statistically different between the groups (P = 0.019). Conclusions: A slight difference for CRAI value was found in patients with early unilateral mandibular first molar extractions.