根管荡洗后不同根管湿润度对根充效果的影响
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摘要
目的比较根管治疗中不同的根管湿润度对根管充填效果的影响。方法收集完整的单根管离体牙50颗,沿颈部截牙冠使根尖孔距截面10 mm。根管预备至30#,常规冲洗配合超声荡洗后用不同的根管干燥方法,根管水分测量仪测量根管内水分,分5组,A组:0,完全干燥;B组:0.1～5,C组:5.1～10;D组:10.1～15;E组:>15,完全湿润(15为牙根管水分测量仪饱和值)。即刻侧向加压法充填根管,X-线片检查无欠充和超充,确保充填完善。横劈,扫描电镜观察牙胶尖和根管侧壁的密合度,缝隙宽度测量法测量充填间隙。结果根管荡洗后,根管在不同的湿润度,牙胶尖和根管侧壁之间均有缝隙。缝隙宽度A和B无统计学差异(P>0.05),C、D和E与A、B组比较均有统计学意义(P<0.05)。结论荡洗后根管湿度在0.1～5,缝隙较小,密合度较高,根管充填效果最佳。
Objective To compare the effect of different root canal wettability on root canal filling.Methods A total of 50 intact single-tube teeth were collected. The crown of the tooth was removed at the neck to make the distance between the root tip and the cross section being 10 mm. Root canal was prepared to30#. After routine irrigation combined with ultrasonic washing, root canal moisture was measured by different root canal drying methods. Root canal moisture meter was used to measure root canal moisture. The measured data were divided into five groups according to measurement data of the moisture meter. A group: completely dry, display data 0; B group: display data 0.1～5; C group:display data 5.1～10; D group:display data 10.1～15;E group:completely wet, display data>15(15 was the saturation value of the root canal moisture meter). The root canals were filled by the lateral compression method immediately, and X-ray film found that the root canal filling was perfect. Scanning electron microscopy was used to observe the consistency of gutta percha point and root canal side wall after transverse spiting. The filling clearance was measured by gap width measurement. Results Under different humidity conditions, the gutta-percha tip and the lateral wall of the root canal consistently had gaps. There was no statistical difference in gap width A and B(P>0.05). C, D and E were statistically significant compared with A and B(P<0.05). Conclusions The gap width of 0.1～5 is small, the tightness is high, and the root canal filling effect is the best.
Objective To compare the effect of different root canal wettability on root canal filling.Methods A total of 50 intact single-tube teeth were collected. The crown of the tooth was removed at the neck to make the distance between the root tip and the cross section being 10 mm. Root canal was prepared to30#. After routine irrigation combined with ultrasonic washing, root canal moisture was measured by different root canal drying methods. Root canal moisture meter was used to measure root canal moisture. The measured data were divided into five groups according to measurement data of the moisture meter. A group: completely dry, display data 0; B group: display data 0.1～5; C group:display data 5.1～10; D group:display data 10.1～15;E group:completely wet, display data>15(15 was the saturation value of the root canal moisture meter). The root canals were filled by the lateral compression method immediately, and X-ray film found that the root canal filling was perfect. Scanning electron microscopy was used to observe the consistency of gutta percha point and root canal side wall after transverse spiting. The filling clearance was measured by gap width measurement. Results Under different humidity conditions, the gutta-percha tip and the lateral wall of the root canal consistently had gaps. There was no statistical difference in gap width A and B(P>0.05). C, D and E were statistically significant compared with A and B(P<0.05). Conclusions The gap width of 0.1～5 is small, the tightness is high, and the root canal filling effect is the best.
引文
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[14]Silva LJ,Pessoa OF,Teixeira MB,et al.Micro-CT evaluation of calcium hydroxide removal through passive ultrasonic irrigation associated with or without an additional instrument[J].Int Endod J,2015,48(8):768-773.
[15]Dias KC,Soares CJ,Steier L,et al.Influence of drying protocol with isopropyl alcohol on the bond strength of resin-based sealers to the root dentin[J].J Endod,2014,40(9):1454-1458.
[2]Schilder H.Filling root canals in three dimensions.1967[J].J Endod,2006,32(4):281-290.
[3]Goldman M,White RR,Moser CR,et al.A comparison of three methods of cleaning and shaping the root canal in vitro[J].J Endod,1988,14(1):7-12.
[4]Zmener O,Pameijer CH,Serrano SA,et al.Significance of moist root canal dentin with the use of methacrylate-based endodontic sealers:an in vitro coronal dye leakage study[J].J Endod,2008,34(1):76-79.
[5]Pommel L,About I,Pashley D,et al.Apical leakage of four endodontic sealers[J].J Endod,2003,29(3):208-210.
[6]Perry C,Kulild JC,Walker MP.Comparison of warm vertical compaction protocols to obturate artificially created defects in the apical onethird[J].J Endod,2013,39(9):1176-1178.
[7]关天燕.连续波热牙胶充填技术在后牙弯曲根管治疗中的应用[J].中国临床医生,2013,41(8):67-68.
[8]Lea CS,Apicella MJ,Mines P,et al.Comparison of the obturation density of cold lateral compaction versus warm vertical compaction using the continuous wave of condensation technique[J].J Endod,2005,31(1):37-39.
[9]毛姣姣.根管冲洗方法的研究进展[J].国际口腔医学杂志,2012,39(5):635-638.
[10]Wang Y,Spencer P.Continuing etching of an all-in-one adhesive in wet dentin tubules[J].J Dent Res,2005,84(4):350-354.
[11]Nagas E,Uyanik MO,Eymirli A,et al.Dentin moisture conditions affect the adhesion of root canal sealers[J].J Endod,2012,38(2):240-244.
[12]Vizgirda PJ,Liewehr FR,Patton WR,et al.A comparison of laterally condensed gutta-percha,thermoplasticized gutta-percha,and mineral trioxide aggregate as root canal filling materials[J].J Endod,2004,30(2):103-106.
[13]Venturi M,Breschi L.Evaluation of apical filling after warm vertical gutta-percha compaction using different procedures[J].J Endod,2004,30(6):436-440.
[14]Silva LJ,Pessoa OF,Teixeira MB,et al.Micro-CT evaluation of calcium hydroxide removal through passive ultrasonic irrigation associated with or without an additional instrument[J].Int Endod J,2015,48(8):768-773.
[15]Dias KC,Soares CJ,Steier L,et al.Influence of drying protocol with isopropyl alcohol on the bond strength of resin-based sealers to the root dentin[J].J Endod,2014,40(9):1454-1458.