中华口腔医学杂志
中華口腔醫學雜誌
중화구강의학잡지
Chinese Journal of Stomatology
2014年
11期
657-661
,共5页
曾雅婕%古丽莎%蔡艳玲%陈典%韦曦
曾雅婕%古麗莎%蔡豔玲%陳典%韋晞
증아첩%고려사%채염령%진전%위희
根管制备%牙科器械%单支锉技术%显微CT
根管製備%牙科器械%單支銼技術%顯微CT
근관제비%아과기계%단지촤기술%현미CT
Root canal preparation%Dental instruments%Single-file technique%Micro-computed tomography
目的 比较两种单支锉技术预备离体磨牙弯曲根管的成形效果,为临床上寻求有效、安全、快捷的根管预备方法提供实验依据.方法 收集离体磨牙弯曲根管80个,编号后按随机数字表法分为4组,分别采用A(Reciproc)、B(OneShape)、C(Mtwo)和D(Revo S)4种镍钛器械行机动预备(分别为A、B、C、D组),记录单个根管预备的时间.各根管预备前后分别进行显微CT扫描,结合MeVisLab软件分析根管预备前后的牙本质去除量、未预备表面积百分比和根管偏移度.结果 在根管全长区域,各组间牙本质去除量、未预备表面积百分比和根管偏移度差异均无统计学意义(P＞0.05).在距根尖孔1 mm水平,A组的根管偏移度[中位数(四分位数间距)]为0.05(0.03)mm,显著小于B、C、D组[分别为0.05(0.04)、0.06(0.03)、0.06(0.04) mm](P＜0.05);A组根尖4mm区域根管表面积和体积增加量分别为(2.14±0.76) mm2、(0.38±0.15) mm3,均显著大于B组[分别为(1.61±0.71)mm2、(0.26±0.10) mm3]和C组[分别为(1.61±0.48) mm2、(0.25±0.11) mm3](P＜0.05),与D组[分别为(1.89±0.46) mm2和(0.30±0.16) mm3]相比差异无统计学意义(P＞0.05).A、B组的操作时间[分别为(86.3±24.6)和(85.9±21.3)s]均显著短于C、D组[分别为(147.4±28.3)和(126.3±27.7) s](P＜0.01).结论 与序列锉(C、D锉)技术相比,A、B两种单支锉技术在弯曲根管中均有良好的成形能力,且能提高根管预备效率.
目的 比較兩種單支銼技術預備離體磨牙彎麯根管的成形效果,為臨床上尋求有效、安全、快捷的根管預備方法提供實驗依據.方法 收集離體磨牙彎麯根管80箇,編號後按隨機數字錶法分為4組,分彆採用A(Reciproc)、B(OneShape)、C(Mtwo)和D(Revo S)4種鎳鈦器械行機動預備(分彆為A、B、C、D組),記錄單箇根管預備的時間.各根管預備前後分彆進行顯微CT掃描,結閤MeVisLab軟件分析根管預備前後的牙本質去除量、未預備錶麵積百分比和根管偏移度.結果 在根管全長區域,各組間牙本質去除量、未預備錶麵積百分比和根管偏移度差異均無統計學意義(P＞0.05).在距根尖孔1 mm水平,A組的根管偏移度[中位數(四分位數間距)]為0.05(0.03)mm,顯著小于B、C、D組[分彆為0.05(0.04)、0.06(0.03)、0.06(0.04) mm](P＜0.05);A組根尖4mm區域根管錶麵積和體積增加量分彆為(2.14±0.76) mm2、(0.38±0.15) mm3,均顯著大于B組[分彆為(1.61±0.71)mm2、(0.26±0.10) mm3]和C組[分彆為(1.61±0.48) mm2、(0.25±0.11) mm3](P＜0.05),與D組[分彆為(1.89±0.46) mm2和(0.30±0.16) mm3]相比差異無統計學意義(P＞0.05).A、B組的操作時間[分彆為(86.3±24.6)和(85.9±21.3)s]均顯著短于C、D組[分彆為(147.4±28.3)和(126.3±27.7) s](P＜0.01).結論 與序列銼(C、D銼)技術相比,A、B兩種單支銼技術在彎麯根管中均有良好的成形能力,且能提高根管預備效率.
목적 비교량충단지촤기술예비리체마아만곡근관적성형효과,위림상상심구유효、안전、쾌첩적근관예비방법제공실험의거.방법 수집리체마아만곡근관80개,편호후안수궤수자표법분위4조,분별채용A(Reciproc)、B(OneShape)、C(Mtwo)화D(Revo S)4충얼태기계행궤동예비(분별위A、B、C、D조),기록단개근관예비적시간.각근관예비전후분별진행현미CT소묘,결합MeVisLab연건분석근관예비전후적아본질거제량、미예비표면적백분비화근관편이도.결과 재근관전장구역,각조간아본질거제량、미예비표면적백분비화근관편이도차이균무통계학의의(P＞0.05).재거근첨공1 mm수평,A조적근관편이도[중위수(사분위수간거)]위0.05(0.03)mm,현저소우B、C、D조[분별위0.05(0.04)、0.06(0.03)、0.06(0.04) mm](P＜0.05);A조근첨4mm구역근관표면적화체적증가량분별위(2.14±0.76) mm2、(0.38±0.15) mm3,균현저대우B조[분별위(1.61±0.71)mm2、(0.26±0.10) mm3]화C조[분별위(1.61±0.48) mm2、(0.25±0.11) mm3](P＜0.05),여D조[분별위(1.89±0.46) mm2화(0.30±0.16) mm3]상비차이무통계학의의(P＞0.05).A、B조적조작시간[분별위(86.3±24.6)화(85.9±21.3)s]균현저단우C、D조[분별위(147.4±28.3)화(126.3±27.7) s](P＜0.01).결론 여서렬촤(C、D촤)기술상비,A、B량충단지촤기술재만곡근관중균유량호적성형능력,차능제고근관예비효솔.
Objective To compare the shaping quality in curved canals of two single-file technique systems with other two traditional full-sequential systems.Methods Eighty mature molar canals with the curvature between 20 and 45 degrees were randomly divided into four groups.Specimens in each group were prepared to size 25 at working length using A(Reciproc),B(OneShape),C(MTwo) and D(Revo S),respectively.Each canal was scanned by micro-computed tomography before and after preparation.Parameters including changes in dentine volume,percentage of uninstrumented area,degree and tendency of transportation were analyzed.The operating time was also recorded.Results In full canal length,there was no difference in canal dentine removal,instrumented percentage and transportation degree among four groups(P＞0.05).In the apical 4 mm region,group A removed more dentine[(2.14±0.76) mm2 of canal surface area and (0.38±0.15) mm3 of canal volume] than groups B and C(P＜0.05).At 1 mm level,median of transportation degree of group A was 0.05 (0.03) mm,which was smaller than other groups(P＜0.05).Groups A and B took (86.3±24.6) s and (85.9±21.3) s,while groups C and D took (147.4±28.3) s and (126.3±27.7) s srespectively to finish preparation.Single file techniques were significantly faster than the two fullsequential systems(P＜0.01).Conclusions Compared with the continuous rotary systems,the reciprocating single-file system A showed better apical shaping ability.Both single-file techniques were more efficient than full-sequential systems for curved canal preparation.Single-file techniques appear to be the effective and efficient method for curved canal preparation.
