Sepideh Dadgar1,2, Mona Alimohamadi3, Nikoo Rajabi4, Vahid Rakhshan5, Farhad Sobouti6,7. 1. Dental Sciences Research Center, Mazandaran University of Medical Sciences, Sari, Iran. 2. Orthodontic Department, Dental Faculty, Mazandaran University of Medical Sciences, Sari, Iran. 3. Oral and Maxillofacial Radiology Department, Dental Faculty, Mazandaran University of Medical Sciences, Sari, Iran. 4. Student Research Committee, Dental Faculty, Mazandaran University of Medical Sciences, Sari, Iran. 5. Department of Anatomy, Dental School, Azad University of Medical Sciences, Tehran, Iran. 6. Dental Sciences Research Center, Mazandaran University of Medical Sciences, Sari, Iran. farhad_sobouti@yahoo.com. 7. Orthodontic Department, Dental Faculty, Mazandaran University of Medical Sciences, Sari, Iran. farhad_sobouti@yahoo.com.
Abstract
INTRODUCTION: The palatal impaction of canine (PIC) can be predicted by some head and neck skeletal anomalies or variants. Since studies on this regard (especially vertebral anomalies) are scarce, this study was conducted. METHODS: This case-control study was done on 46 PIC orthodontic patients (34 females, 12 males) and 46 control orthodontic patients (36 females, 10 males). The diagnosis of PIC was done on lateral cephalographs and panoramic radiographs. On cephalographs, sella turcica bridging (occurrence and severity) and ponticulus posticus (occurrence and severity) were assessed. Associations between PIC, sella bridging, and ponticulus posticus were examined statistically (α = 0.05, β ≤ 0.2). RESULTS: Cases' and controls' mean ages were 17.7 ± 4.0 and 17.4 ± 3.5, respectively. Of the case subjects, 22, 22, and 2 had respectively types I (normal), II, and III of sella bridging, while these numbers were 34, 12, and 0 in controls (chi-square P = 0.023 for severity, 0.010 for occurrence). Ponticulus posticus was observed in 28 cases (7 completed) and 17 controls (6 completed, P = 0.022 for occurrence, 0.056 for severity). Sella bridging was not associated with ponticulus posticus (Spearman P = 0.150). According to binary logistic regression, sella bridging can increase the odds of palatal canine impaction for OR = 2.8 times, while ponticulus posticus for OR = 2.6. Age and sex did not affect sella bridging or ponticulus posticus. CONCLUSIONS: Both sella bridging and ponticulus posticus can predict an increased rate of PIC for more than 2.5 times.
INTRODUCTION: The palatal impaction of canine (PIC) can be predicted by some head and neck skeletal anomalies or variants. Since studies on this regard (especially vertebral anomalies) are scarce, this study was conducted. METHODS: This case-control study was done on 46 PIC orthodontic patients (34 females, 12 males) and 46 control orthodontic patients (36 females, 10 males). The diagnosis of PIC was done on lateral cephalographs and panoramic radiographs. On cephalographs, sella turcica bridging (occurrence and severity) and ponticulus posticus (occurrence and severity) were assessed. Associations between PIC, sella bridging, and ponticulus posticus were examined statistically (α = 0.05, β ≤ 0.2). RESULTS: Cases' and controls' mean ages were 17.7 ± 4.0 and 17.4 ± 3.5, respectively. Of the case subjects, 22, 22, and 2 had respectively types I (normal), II, and III of sella bridging, while these numbers were 34, 12, and 0 in controls (chi-square P = 0.023 for severity, 0.010 for occurrence). Ponticulus posticus was observed in 28 cases (7 completed) and 17 controls (6 completed, P = 0.022 for occurrence, 0.056 for severity). Sella bridging was not associated with ponticulus posticus (Spearman P = 0.150). According to binary logistic regression, sella bridging can increase the odds of palatal canine impaction for OR = 2.8 times, while ponticulus posticus for OR = 2.6. Age and sex did not affect sella bridging or ponticulus posticus. CONCLUSIONS: Both sella bridging and ponticulus posticus can predict an increased rate of PIC for more than 2.5 times.
Authors: Hana Omar Al Balbeesi; Huda Mohammed Al Kawari; Ahoud Saad Al Tamimi; Ibtisam Al Mubarak; Khulood I Al Ibrahim; Darshan Devang Divakar Journal: Int J Periodontics Restorative Dent Date: 2019-11-11 Impact factor: 1.840
Authors: Tomasz Jankowski; Maciej Jedliński; Katarzyna Grocholewicz; Joanna Janiszewska-Olszowska Journal: Int J Environ Res Public Health Date: 2021-04-22 Impact factor: 3.390