Amount of Apical Extrusions of Root Canal Preparation with Single ProTaper Sx in Primary Teeth: an in Vitro Study

doi:10.13701/j.cnki.kqyxyj.2021.05.012

Abstract

Abstract: Objective: To compare the amount of apical extrusions of rotary instrument ProTaper Sx and stainless steel K-file for root canal preparation of primary teeth in vitro. Methods: Isolated deciduous teeth were collected from the outpatient department. After coronal cutting and root separation, the distal root canal, proximal root canal, anterior root canal, palatal root canal, proximal buccal root canal, and distal buccal root canal were classified into 16 root canals of each type, a total of 96. The root canal types were divided into two groups: Sx group (n=48) and K-file group (n=48) randomly. ProTaper Sx and K-files combined with 10mL 0.2% chlorhexidine solution were used for root canal preparation. The preparation time was recorded, and the amount of apical debris and exudation was measured. Results: The preparation time of K-file group (328.8s) was longer than that of Sx group (180.9s, P<0.05). Both of two instruments could cause a different amount of apical debris and exudation. In Sx group, the amount of apical debris and exudation (0.00128±0.00056) g; (0.00614±0.00183) g was lower than that of K-file group (0.00345±0.00124) g; (0.02930±0.01879) g, P<0.05. Conclusion: Compared with stainless steel K-file, ProTaper Sx could shorten preparation time and reduce the amount of apical extrusions in primary teeth

Key words: primary teeth, root canal preparation, ProTaper Sx, amount of apical debris

SU Xuelong, LIU Fei, HE Shuyang, GUO Qinyu. Amount of Apical Extrusions of Root Canal Preparation with Single ProTaper Sx in Primary Teeth: an in Vitro Study[J]. Journal of Oral Science Research, 2021, 37(5): 436-441.

References

[1] Topçuolu G, Topçuolu HS, Akpek F. Evaluation of apically extruded debris during root canal preparation in primary molar teeth using three different rotary systems and hand files [J]. Int J Paediatr Dent, 2016, 26(5):357-363.
[2] 卢妍,吴宾,闫卉.4种根管预备系统根尖推出物和冠方带出物的比较研究[J].国际口腔医学杂志,2019,46(5):503-508.
[3] Koçak MM, Çiçek E, Koçak S, et al. Apical extrusion of debris using ProTaper Universal and ProTaper Next rotary systems [J]. Int Endod J, 2015, 48(3):283-286.
[4] Keskin C, Sivas Yilmaz Ö, Inan U. Apically extruded debris produced during glide path preparation using R-Pilot, WaveOne Gold Glider and ProGlider in curved root canals [J]. Aust Endod J, 2020, 46(3):439-444.
[5] Myers GL, Montgomery S. A comparison of weights of debris extruded apically by conventional filing and Canal Master techniques [J]. J Endod, 1991, 17(6):275-279.
[6] 王慧芸.牙体解剖生理学[M].北京:人民卫生出版社,1958:26.
[7] 刘琼,任飞,钱虹,等.M3乳牙镍钛锉在乳牙根管治疗中的临床效果研究[J].口腔医学研究,2019,35(9):876-878.
[8] Buldur B, Hascizmeci C, Aksoy S, et al. Apical extrusion of debris in primary molar root canals using mechanical and manual systems[J]. Eur J Paediatr Dent, 2018, 19(1):16-20.
[9] Williams CE, Reid JS, Sharkey SW, et al. In-vitro measurement of apically extruded irrigant in primary molars [J]. Int Endod J, 1995, 28(4): 221-225.
[10] Ghivari SB, Kubasad GC, Chandak MG, et al. Apical extrusion of debris and irrigant using hand and rotary systems: A comparative study [J]. J Conserv Dent, 2011, 14(2):187-190.
[11] Myers GL, Montgomery S. A comparison of weights of debris extruded apically by conventional filing and Canal Master techniques [J]. J Endod, 1991, 17(6):275-279.
[12] Tronstad L. Tissue reactions following apical plugging of the root canal with dentin chips in monkey teeth subjected to pulpectomy [J]. Oral Surg Oral Pathol, 1978, 45(2):297-304.
[13] De-Deus G, Brandão MC, Barino B, et al. Assessment of apically extruded debris produced by the single-file ProTaper F2 technique under reciprocating movement [J]. J Endod, 2014, 40(4):526-529.
[14] Hachmeister DR, Schindler WG, Rd WW, et al. The sealing ability and retention characteristics of mineral trioxide aggregate in a model of apexification [J]. J Endod, 2002, 28(5):386-390.
[15] Martin RL, Monticelli F, Brackett WW, et al. Sealing properties of mineral trioxide aggregate orthograde apical plugs and root fillings in an in vitro apexification model [J]. J Endod, 2007, 33(3):272-275.
[16] Tanalp J, Güngör T. Apical extrusion of debris: a literature review of an inherent occurrence during root canal treatment [J]. Int Endod J, 2014, 47(3):211-221.
[17] Bürklein S, Benten S, Schäfer E. Quantitative evaluation of apically extruded debris with different single-file systems: Reciproc, F360 and OneShape versus Mtwo [J]. Int Endod J, 2014, 47(5):405-409.