Gender difference in tooth autotransplantation with complete root formation: a retrospective survey

Abstract

Gender-related risk factors in the survival of transplanted teeth with complete root formation have not yet been identified. The purpose of this study was to investigate gender differences in tooth autotransplantation at dental clinics. We asked participating dentists to provide information on transplantations they had undertaken from 1 January 1990 to 1931 December 2010. The data were screened to exclude patients who underwent more than one transplantation, smokers or those whose smoking habits were unknown, patients under 30 or who were 70 years old and over, cases where the transplanted teeth had incomplete root formation or multiple roots and those with fewer than 20 present teeth post-operation. We analysed 73 teeth of 73 males (mean age, 47.2 years) and 106 teeth of 106 females (mean age, 45.3 years) in this study. The cumulative survival rate and mean survival time were calculated using the Kaplan-Meier method. The cumulative survival rate for males was 88.3% at the 5-year mark, 64.8% at 10 years and 48.6% at 15 years; for females, it was 97.2% at the 5-year mark, 85.9% at 10 years and 85.9% at 15 years. A log-rank test indicated the difference between males and females to be significant (P = 0.011). There was also a significant difference in the main causes for the loss of transplanted teeth: males lost more transplanted teeth due to attachment loss than females (P < 0.05). These results indicate that males require more attention during the autotransplantation process, particularly at the stage of pre-operation evaluation and that of follow-up maintenance.

Autotransplantation of teeth with complete rhizogenesis: a literature review

“…The complete text of the remaining articles (n = 8) was obtained and submitted to independent judged by each of the evaluators. [7][8][9][10][11] The eight studies met the inclusion criteria and were included in the present literature review. Table 1 presents the main results obtained in the articles selected for the present literature review.…”

“…In contrast, Yoshino et al 2013 11 did not observe significant changes in the success rate of dental transplantation in patients of different ages. Regarding the gender factor, all studies report that there is no significant difference in success rates in male or female patients, except the study Yoshino et al 2013, 10 the author suggests that women have a higher success rate in dental transplant therapy than male patients. The authors justify this difference in the fact that female subjects is more 14 Revista Científica do CRO-RJ (Rio de Janeiro Dental Journal) v. 4, n. 1, January -April, 2019 collaborative in dental treatments and also presents better oral hygiene habits.…”

Risk Factors Affecting Third Molar Autotransplantation during 5 and 10 Years

“…Autotransplantation is commonly used to replace lost or congenitally missing teeth [1][2][3]7,9,10,[13][14][15][16]18,19,[21][22][23] . Transplantation of donor teeth with completely formed roots is riskier than that of teeth in which root formation is still incomplete 3,15) .…”

“…Transplantation of donor teeth with completely formed roots is riskier than that of teeth in which root formation is still incomplete 3,15) . Several studies have reported the risk factors associated with autotransplantation of teeth with complete roots 2,10,14,16,19,[21][22][23] , which included age 16) , molars as donor teeth 16) , a probing pocket depth of 4 mm or more 16) , a history of root canal treatment 16) , multi-rooted teeth 14,16) , fixation with sutures 16) , donor teeth with caries 14) and buccal bone coverage of transplanted teeth 14) with medium-term observation (approximately 5 years).…”

“…Studies on the long-term prognosis (approximately 10 years or more) in autotransplantation of donor teeth with complete root formation 2,19,[21][22][23] have identified the quality of root filling 19) , sex 21) , and age 2,22) as factors influencing survival or success rate. Our group has already reported risk factors associated with survival in third molar autotransplantation over a 10-year period in men, identifying recipient site tooth extraction due to periodontal disease and fewer than 25 present teeth, both factors related to individual oral rather than operative condition 23) .…”