Comparison of quality of obturation and instrumentation time using hand files and two rotary file systems in primary molars: A single-blinded randomized controlled trial

ABSTRACT

Objective: In permanent dentition, different rotary systems are used for canal cleaning and shaping. Rotary instrumentation in pediatric dentistry is an emerging concept. A very few studies have compared the efficiency of rotary instrumentation for canal preparation in primary teeth. Hence, this study was performed to compare the obturation quality and instrumentation time of two rotary files systems – Protaper, Mtwo with hand files in primary molars. Materials and Methods: Forty-five primary mandibular molars were randomly allotted to one of the three groups. Instrumentation was done using K-files in Group 1; Protaper in Group 2; and Mtwo in Group 3. Instrumentation time was recorded. The canal filling quality was assessed as underfill, optimal fill, and overfill. Statistical analysis was done using Chi-square, ANOVA, and post hoc Tukey test. Results: No significant difference was observed in the quality of obturation among three groups. Intergroup comparison of the instrumentation time showed a statistically significant difference between the three groups.Conclusion: The use of rotary instrumentation in primary teeth results in marked reduction in the instrumentation time and improves the quality of obturation.

Key words:

Primary teeth - pulpectomy - randomized controlled trial - rotary instrumentation

• REFERENCES

• 1 Bowen JL, Mathu-Muju KR, Nash DA, Chance KB, Bush HM, Li HF. Pediatric and general dentists' attitudes toward pulp therapy for primary teeth. Pediatr Dent 2012; 34: 210-5
• 2 Endo MS, Ferraz CC, Zaia AA, Almeida JF, Gomes BP. Quantitative and qualitative analysis of micro-organisms in root filled teeth with persistent infection: Monitoring of endodontic retreatment. Eur J Dent 2013; 7: 302-9
• 3 Silva LA, Leonardo MR, Nelson-Filho P, Tanomaru JM. Comparison of rotary and manual instrumentation techniques on cleaning capacity and instrumentation time in deciduous molars. J Dent Child (Chic) 2004; 71: 45-7
• 4 Rosa FM, Modesto A, Faraco-Junior IM. Manual and rotary instrumentation techniques for root canal preparation in primary molar. Dentistry 2014; 2: 1-5
• 5 Azar MR, Safi L, Nikaein A. Comparison of the cleaning capacity of Mtwo and Pro Taper rotary systems and manual instruments in primary teeth. Dent Res J (Isfahan) 2012; 9: 146-51
• 6 Deplazes P, Peters O, Barbakow F. Comparing apical preparations of root canals shaped by nickel-titanium rotary instruments and nickel-titanium hand instruments. J Endod 2001; 27: 196-202
• 7 Barbizam JV, Fariniuk LF, Marchesan MA, Pecora JD, Sousa-Neto MD. Effectiveness of manual and rotary instrumentation techniques for cleaning flattened root canals. J Endod 2002; 28: 365-6
• 8 Pinheiro SL, Araujo G, Bincelli I, Cunha R, Bueno C. Evaluation of cleaning capacity and instrumentation time of manual, hybrid and rotary instrumentation techniques in primary molars. Int Endod J 2012; 45: 379-85
• 9 Barr ES, Kleier DJ, Barr NV. Use of nickel-titanium rotary files for root canal preparation in primary teeth. Pediatr Dent 2000; 22: 77-8
• 10 Crespo S, Cortes O, Garcia C, Perez L. Comparison between rotary and manual instrumentation in primary teeth. J Clin Pediatr Dent 2008; 32: 295-8
• 11 Kuo C, Wang Y, Chang H, Huang G, Lin C, Li U. et al. Application of Ni-Ti rotary files for pulpectomy in primary molars. J Dent Sci 2006; 1: 10-5
• 12 Ramezanali F, Afkhami F, Soleimani A, Kharrazifard MJ, Rafiee F. Comparison of cleaning efficacy and instrumentation time in primary molars: Mtwo rotary instruments vs. hand K- files. Iran Endod J 2015; 10: 240-3
• 13 Vieyra JP, Enriquez FJ. Instrumentation time efficiency of rotary and hand instrumentation performed on vital and necrotic human primary teeth: A Randomized Clinical Trial. Dentistry 2014; 4: 1-5
• 14 Tabassum S, Khan FR. Failure of endodontic treatment: The usual suspects. Eur J Dent 2016; 10: 144-7
• 15 Foschi F, Nucci C, Montebugnoli L, Marchionni S, Breschi L, Malagnino VA. et al. SEM evaluation of canal wall dentine following use of Mtwo and ProTaper NiTi rotary instruments. Int Endod J 2004; 37: 832-9
• 16 Malagino VA, Grande NM, Plotino G, Somma F. The MtwoNiTi Rotary System for Root Canal Preparation. Available from: http://www.vdw-dental.com/pdf/presse/RO0306_59-62_Malagino.pdf [Cited on 2012 Apr 04]
• 17 Nagaratna PJ, Shashikiran ND, Subbareddy VV. In vitro comparison of NiTi rotary instruments and stainless steel hand instruments in root canal preparations of primary and permanent molar. J Indian Soc Pedod Prev Dent 2006; 24: 186-91
• 18 Finn SB. editor Morphology of primary teeth. In: Clinical Pedodontics 4th ed. Philadelphia: Saunders Co; 1973: p. 59-70
• 19 Makarem A, Ravandeh N, Ebrahimi M. Radiographic assessment and chair time of rotary instruments in the pulpectomy of primary second molar teeth: A randomized controlled clinical trial. J Dent Res DentClin Dent Prospects 2014; 8: 84-9
• 20 Ochoa-Romero T, Mendez-Gonzalez V, Flores-Reyes H, Pozos-Guillen AJ. Comparison between rotary and manual techniques on duration of instrumentation and obturation times in primary teeth. J Clin Pediatr Dent 2011; 35: 359-63