中华口腔医学研究杂志（电子版）
中華口腔醫學研究雜誌（電子版）
중화구강의학연구잡지（전자판）
CHINESE JOURNAL OF STOMATOLOGICAL RESEARCH(ELECTRONIC VERSION)
2014年
4期
286-290
,共5页
根管再治疗%镍钛%R-Endo机动器械
根管再治療%鎳鈦%R-Endo機動器械
근관재치료%얼태%R-Endo궤동기계
Endodontic retreatment%Nickel-Titanium%R-Endo rotary instruments
目的评价R-Endo镍钛机用器械在离体牙根管再治疗中的应用性能。方法收集根尖孔发育完成的单根管恒牙，根据根管弯曲度分层随机分组。使用牙胶或RealSeal树脂充填，而后分别使用Gates-Glidden钻+K锉、HERO 642镍钛机动和R-Endo镍钛机动再治疗。记录再治疗时间及从根尖孔推出的碎屑重量，并拍摄术后X线片，AutoCAD 2008软件分析残余充填材料与根管壁的面积比。结果 R-Endo镍钛系统再治疗时间较长（P＝0.003）；推出根尖孔碎屑量较Gates-Glidden钻＋K锉少（P＝0.001），与HERO 642镍钛系统相比差异无统计学意义（P＝0.239）；根管内残余充填材料与根管壁的面积比低于其他两组，但差异无统计学意义（P＝0.157）。 RealSeal充填组再治疗时间（P＝0.001）和推出根尖孔碎屑（P＝0.028）均低于牙胶充填组，两者间差异均具有统计学意义（P＜0.05）。结论 R-Endo机动镍钛系统是根管再治疗的有效方法，其根管清理性能优于手动器械，对根尖周组织激惹度较传统手动器械小，但器械的安全性有待提高。
目的評價R-Endo鎳鈦機用器械在離體牙根管再治療中的應用性能。方法收集根尖孔髮育完成的單根管恆牙，根據根管彎麯度分層隨機分組。使用牙膠或RealSeal樹脂充填，而後分彆使用Gates-Glidden鑽+K銼、HERO 642鎳鈦機動和R-Endo鎳鈦機動再治療。記錄再治療時間及從根尖孔推齣的碎屑重量，併拍攝術後X線片，AutoCAD 2008軟件分析殘餘充填材料與根管壁的麵積比。結果 R-Endo鎳鈦繫統再治療時間較長（P＝0.003）；推齣根尖孔碎屑量較Gates-Glidden鑽＋K銼少（P＝0.001），與HERO 642鎳鈦繫統相比差異無統計學意義（P＝0.239）；根管內殘餘充填材料與根管壁的麵積比低于其他兩組，但差異無統計學意義（P＝0.157）。 RealSeal充填組再治療時間（P＝0.001）和推齣根尖孔碎屑（P＝0.028）均低于牙膠充填組，兩者間差異均具有統計學意義（P＜0.05）。結論 R-Endo機動鎳鈦繫統是根管再治療的有效方法，其根管清理性能優于手動器械，對根尖週組織激惹度較傳統手動器械小，但器械的安全性有待提高。
목적평개R-Endo얼태궤용기계재리체아근관재치료중적응용성능。방법수집근첨공발육완성적단근관항아，근거근관만곡도분층수궤분조。사용아효혹RealSeal수지충전，이후분별사용Gates-Glidden찬+K촤、HERO 642얼태궤동화R-Endo얼태궤동재치료。기록재치료시간급종근첨공추출적쇄설중량，병박섭술후X선편，AutoCAD 2008연건분석잔여충전재료여근관벽적면적비。결과 R-Endo얼태계통재치료시간교장（P＝0.003）；추출근첨공쇄설량교Gates-Glidden찬＋K촤소（P＝0.001），여HERO 642얼태계통상비차이무통계학의의（P＝0.239）；근관내잔여충전재료여근관벽적면적비저우기타량조，단차이무통계학의의（P＝0.157）。 RealSeal충전조재치료시간（P＝0.001）화추출근첨공쇄설（P＝0.028）균저우아효충전조，량자간차이균구유통계학의의（P＜0.05）。결론 R-Endo궤동얼태계통시근관재치료적유효방법，기근관청이성능우우수동기계，대근첨주조직격야도교전통수동기계소，단기계적안전성유대제고。
Objective To evaluate the efficacy of R-Endo Nickel-Titanium rotary instruments in endodontic retreatment in vitro. Methods Extracted caries-free mature single-rooted permanent teeth were collected and divided into 6 groups according to the canal curvature . The teeth were obturated by gutta-percha and RealSeal resin obturation system, and retreated by Gates-Glidden drills. K files, HERO 642 Nickel-Titanium rotary instruments and R-Endo Nickel-Titanium rotary instruments, respectively. The total time of retreatment was recorded, extruded debris was collected and weighed. Moreover, the image of residual filling materials was outlined and measured by AutoCAD 2008 software. Results R-Endo system took more operating time than the other 2 methods (P=0.003). And R-Endo system produced significantly less debris extrusion than by Gates-Glidden drill and K file (P=0.001), but there was no significant difference between R-Endo an HERO 642 (P=0.239). Moreover, the mean ratios of remaining fillings versus the area of groups retreated by R-Endo system was lower than other 2 groups , but of no statistically difference (P=0.157). Besides, canals obturated by RealSeal resin obturation system took less operating time (P=0.001) and produced less debris extrusion (P=0.028) than by gutta-percha (P<0.05). Conclusions R-Endo Nickel-Titanium rotary system is effective in endodontic retreatment. In comparison with hand instruments, it is more effective in canal wall cleanliness and less irritative to the periapical tissue. But the necessity for improvement on its safety should be recognized.
