ProTaper和K3预备对上颌前磨牙根管形态影响的研究

Abstract

Abstract: ［Abstract］ Objective To evaluate the root canal shaping abilities of ProTaper and K3 . Methods A total of 40 extracted maxillary premolars each with two root canals were divided into two groups，one prepared by ProTaper and the other by K3 rotary instruments. 3D imaging was made respectively before and after preparation. Recording the 3D data of three loci of the cross section,buccolingual plane and the mesial and distal section.The efficiency of preparation was analyzed by three-dimensional imaging. Results Compared to ProTaper, the cutting ability on dentin of K3 was a little inferior, significant difference was found between the two groups (P<0.01). Conclusion The shape of root canals after preparation of K3 were better than ProTaper. The dentin removal was less，which Less weaken the resistance of remaining tooth structure.

Key words: ProTaper, K3, shaping abilities, bending force, CBCT

CLC Number:

R781.05

References

［1］Gluskin AH，Radke RA，Frost SL，et al． The mandibular incisor rethinking guidelines for post and coredesign［J］． J Endod，1995，21：33－37．
［2］ Plotino G，Grande NM，Falanga A，et al. Dentine removed in the coronal portion of root canals following two preparation techniques［J］. Int Endod J，2007，40（11）：852 - 858.
［3］Abou-Rass M，Jastrab RJ. The use of rotary instruments as auxillary aids to root canal preparation of molars［J］. J Endod，1982，8（2）：78 - 82.
［4］李欣梅. 三种旋转镍钛器械预备弯曲根管的临床效果研究［J］. 中国实用口腔科杂志，2010，3（7）：425 - 428.
［5］Lynch CD, McConnell RJ. Attitudes and use of rubber dam by lrish general dental practitioners[J]. Int Endod J,2007,40(6):427～432.
［6］Buchanan ls the atandardized-taper root canal preparation-ptrt 1,concepts for variadly tapered,shaping rnatyuments［J］.lnt endod,2000,33(6) :516-529.
［7］Wilcowv LR，Roskelleyc，Sutton T． The relation ship of root canal enlargement to finger－shreader induced verlical root fracture ［J］． J Endod，1997，23（8）：533－534．
［8］Teixcia FB，Teixcira ECN，Thompson，et al． Fracture resistanc of root endodntically with a new resin filling material［J］． Am Dent Assoc，2004，13（5）：646．
［9］ Plotino G，Grande NM，Falanga A，et al. Dentine removed in the coronal portion of root canals following two preparation techniques［J］. Int Endod J，2007，40（11）：852 - 858.
［10］ Barbakow F，Lutz F. The lightspeed preparation technique evaluated by Swiss clinicians after attending continuing education courses［J］. Int Endod J，1997，30（1）：46 - 50.
［11］陈君岳林王嘉德等根管扩大程度与牙根强度和应力分布的关系中华口腔医学杂志 2006 41（11）661-663

[1]	XU Hai-Yang. A CBCT study of the alveolar bone in the maxillary central incisor root apex of the skeletal class II adults [J]. , 2019, 39(6): 510-513.
[2]	. The CBCT analysis of intruding maxillary molars of the adult by implanting miniscrew as anchorage [J]. , 2019, 39(5): 436-438.
[3]	. Clinical analysis of the shaping ability of M3-PRO NiTi files in curved root canals [J]. , 2019, 39(2): 131-134.
[4]	. An Analysis of the pathological influence of periapical disease of maxillary posterior teeth to the maxillary sinus floor using cone beam computed tomography [J]. , 2019, 39(1): 35-39.
[5]	. Morphological study of the Hans’ bifid mandibular canal in Southwest China based on CBCT [J]. , 2018, 38(8): 713-716.
[6]	. The radiography analysis of 210 root canal treatment failure cases [J]. , 2018, 38(6): 533-536.
[7]	. Effect observation of microscopic ultrasonic technique combined with CBCT in treatment of complex root canals of premolars [J]. , 2018, 38(12): 1092-1095.
[8]	. CBCT study of the placement of micro implants in the posterior teeth of the maxillary protrusion [J]. , 2018, 38(12): 1110-1113.
[9]	. Clinical analysis of 46 cases of ectopic mandibular third molar and its associated disease [J]. , 2018, 38(11): 995-998.
[10]	. The comparsion study on TMJ for skeletal Ⅲ class malocclusion and individual normal occlusion by CBCT [J]. , 2017, 37(8): 707-711.
[11]	Shan Wang. A study on the midsagittal reference plane of CBCT three-dimensional cephalometry [J]. , 2017, 37(7): 621-624.
[12]	. To analyze the correlative factors of the gingival biotype of the maxillary central incisor [J]. , 2017, 37(7): 615-620.
[13]	. Application of CBCT in evaluation of alveolar bone changes before and after periodontal therapy in chronic periodontitis [J]. , 2017, 37(5): 444-448.
[14]	. Three-dimensional finite element analysis of Advansync functional appliance used in advancing mandible in the condition of three different jaw positions [J]. , 2017, 37(5): 439-443.
[15]	Ling FANG. A comparative study of cleared effect of three different root canal instruments on root canal filling [J]. , 2017, 37(4): 321-324.

Comparative evaluation of the shaping abilities of ProTaper and K3 on root canal morphology of premolars

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 15

Recommended Articles

Metrics

Comments