文献类型：期刊文献

英文题名：Influence of abutment tooth position and adhesive point dimension on the rigidity of a dental trauma wire-composite splint

作者：Zhu, Yuqing[1];Chen, Hui[1];Cen, Lian[2,3];Wang, Jun[1]

机构：[1]Shanghai Jiao Tong Univ, Dept Pediat Dent, Sch Stomatol, Med Coll,Peoples Hosp 9, Shanghai, Peoples R China;[2]East China Univ Sci & Technol, Natl Tissue Engn Ctr China, Shanghai, Peoples R China;[3]East China Univ Sci & Technol, Sch Chem Engn, 130 Meilong Rd, Shanghai 200237, Peoples R China

年份：2016

卷号：32

期号：3

起止页码：225

外文期刊名：DENTAL TRAUMATOLOGY

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000380264300010)】；

基金：This study is financially supported by grants from the Science and Technology Commission of Shanghai (Grant No: 124119b0101), National "973" Project Foundation of China (Grant No: 2010CB944804) and the Fundamental Research Funds for the Central Universities.

语种：英文

外文关键词：abutment location; adhesive point dimension; rigidity; wire-composite splint; dental trauma

摘要：Background/Aim: The influence of abutment tooth position and adhesive point dimension on rigidity of wire-composite splints, used in dental trauma, was evaluated in vitro. Materials and Methods: A commercial artificial resin model was used. The central incisors served as injured teeth with increased mobility (degrees of loosening II tooth 21 and III tooth 11), whereas teeth 12/22 or teeth 13/23 served as non-injured teeth with physiological mobility. Horizontal and vertical tooth mobility before and after splinting was assessed, using a universal testing machine. Teeth were splinted with a wire-composite splint (0.8 mm). Four groups were assigned with respective abutment tooth position and adhesive point dimension: group 1 (13-11-21-23, 2 9 2 mm(2)), group 2 (12-11-21-22, 2 9 2 mm(2)), group 3 (12-11-21-22, 3 9 3 mm(2)), group 4 (12-11-21-22, 4 9 4 mm(2)). Results: For each group, tooth mobility after splinting was significantly higher than the physiological tooth mobility (P < 0.05). For teeth 11 and 12, no significant differences between Group 1 and 2 (P > 0.05) were found in tooth mobility after splinting. Significant differences were found in horizontal tooth mobility after splinting of tooth 11 between Group 2 and 3, Group 2 and 4 and Group 3 and 4, respectively (P < 0.05), whereas significant difference was found in vertical dimension for tooth 11 only between Group 2 and 4 (P < 0.05). Significant differences were found in horizontal mobility of tooth 21 between Group 2 and 3, and Group 2 and 4 (P < 0.05). Conclusion: Splinting the injured teeth 11 and 21 and the bilateral uninjured abutment teeth (teeth 12/22 or teeth 13/23) with the stainless steel wire-composite splint (0.8 mm), can be considered flexible splinting. While mobility was still higher than in unaffected teeth, increase in size of the adhesive splinting point decreased horizontal but not vertical mobility in most cases.