关键词: 高强度石英纤维, 牙周夹板, 正畸保持

Abstract:

Objective To evaluate the clinical effect of the application of the new Quartz Splint^TM high strength silica fiber splint in keeping the orthodontic teeth,and to provide the basis for choosing appropriate orthodontic retainer. Methods A total of 62 patients needing local strengthening retainer after completed orthodontic treatment were selected.The patients were divided 3-month,6-month and 12-monthgroups according to the follow-up time.Quartz Splint^TM high strength silica fiber splint was used to fox the labial teeth.Visual and instrument examination were used to check wether there were off-sites of retainers in various groups,teeth gap and the presence of recurrent dislocation;the periodontal health status was observed including probing depth(PD),bleeding index(BI),and plaque index(PLI). Results 60 patients using Quartz Splint^TM high strength silica fiber splint were stable without frature while the periodontal tissue revealed no significant changes in all 62 patients.Only 2 cases of Quartz Splint^TM high strength silica fiber splint in 6 months and 12 months respectively had individual off-sites without breaking.During 12-month follow-up period,the total intact rate of Quartz Splint^TM high strength silica fiber splint was 96.77%,and the patients had healthy periodontal conditions. Conclusion The stable clinical effect can be obtained by the application of Quartz Splint^TM high strength silica fiber splint for scattered clearance of the front teeth area or rotated teeth after orthodontic.

Key words: high strength quartz fiber, splint, orthodontic retainers