Short-term efficacy evaluation of Mis Seven implant system repairing dentition loss

doi:10.3969/j.issn.2095-4344.1668

Abstract

Abstract:

BACKGROUND: Mis Seven implant has become more and more popular in oral implant restoration, and the clinical application in dentate-deficient patients remains to be studied.

OBJECTIVE: To explore the short-term effects of the Mis Seven implant system on fixed restorations in dentition loss.

METHODS: Nineteen patients undergoing fixed dental prostheses with the Mis Seven system due to dentition loss at the Department of Implants of the Stomatological Hospital of Guangzhou Medical University between April 2015 and December 2017 were included. Three patients had missing maxillary and maxillary dentition and unilateral maxillary teeth. Six patients were loss of maxillary dentition, and there were 10 cases of unilateral mandibular dentition missing. The total dental implants were 134. All cases were implanted and fixed for one stage. Clinical examination, alveolar bone and inter-implant image performance and post-load repair effect at 6, 12 and 24 months of follow-up were used as evaluation indicators.

RESULTS AND CONCLUSION: (1) In 134 implants, failure was in 2 cases due to surrounding tissue infection. The success rate of before implant restoration was 98.51%, and the success rate after repair was 100%. (2) The stability of dentition of 19 patients was good, showing good occlusion. No mechanical complications or biological complications occurred. The stability of the restoration was 100%. (3) The vertical absorption of bone tissue around all implants was less than 0.2 mm at 6, 12, 24 months after repair, suggesting that the implant has no obvious edge bone resorption. The gingival tissues around all implants were healthy, and no unhealed inflammation or hyperkeratosis appeared. (4) These results imply that the Mis Seven system in the dentition defect fixation exhibits good short-term clinical results.

Key words: Prosthodontics, Dental Implants, Tissue Engineering

CLC Number:

R459.9

Wang Liping, Chen Weihong, Zha Jun, Chen Xili, Su Yucheng, Fang Ying, Dong Yu, Guo Xueqi, Ge Linhu. Short-term efficacy evaluation of Mis Seven implant system repairing dentition loss[J]. Chinese Journal of Tissue Engineering Research, 2019, 23(14): 2208-2214.

Figures/Tables 7

2.7 典型病例 42岁女性患者，主诉：1个月前于外院拔除松动牙，现于广州医科大学附属口腔医院咨询种植修复。检查：全口牙列缺失，拔牙窝牙龈基本愈合，稍红肿，未见溢脓，牙槽嵴轻度吸收，颌间距12-16 mm。锥形束CT显示：12、13、22、24、34、44骨高度约15 mm，骨宽度约8 mm；32、42骨高度约15 mm，骨宽度约5 mm；14、15骨高度约12 mm，骨宽度约8 mm；36、46骨高度约 12 mm，骨宽度约10 mm。16、17、26、27骨高度约3 mm，骨宽度约10 mm。诊断：上下颌牙列缺失。处理：①鼻插管全麻，常规颌面部消毒铺巾，阿替卡因局麻下固定外科导板后定位植入点和初步制备种植窝，取下导板，沿17-27、37-47牙槽嵴顶切开翻瓣，去净肉芽组织，牙槽骨修整，种植窝预备，于12、13、21、23、32、43分别植入Mis Seven 3.75 mm×13 mm植体各1颗，于15、25、34、36、45、47分别植入Mis seven 3.75 mm×11.5 mm植体各1颗，初期稳定性35 N•cm，放置封闭螺丝，埋入式愈合，同期引导骨再生，连续严密缝合。同期于16、17和26、27颊侧骨壁处开窗行上颌窦底提升术，充填Bio-Oss骨粉后覆盖Bio-Gide膜，严密缝合；②术后3个月锥形束CT示种植体周围骨结合良好，无连续透射影，下颌行二期手术，同时临时固定桥修复，上颌行活动义齿过渡修复；③上颌窦底外提升术后6个月，锥形束CT显示双侧上颌窦底均有骨密度增高，于17、27进行一期种植手术，切开翻瓣，种植窝预备，分别植入Mis Seven系统4.2 mm×10 mm植体各1颗，放置封闭螺丝，严密缝合；④17、27一期手术后3个月锥形束CT显示种植体周围骨结合良好，无连续透射影，上颌行二期手术，同期上下颌进行印模及颌位关系记录，半个月后进行试戴支架蜡牙，调适后行临时固定桥修复，3个月后进行最终修复体戴牙；⑤修复完成后复查，复查时间为戴牙后1，3，6个月及1年以后每年进行复查，修复体形态良好，边缘密合，种植体周围骨组织稳定，无明显骨吸收，咬合舒适，修复体稳定。病例资料详见图2-9。"

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