Morphological Assessment and Cleaning Capacity of a Reciprocating System in Root Canals of Deciduous Teeth

Abstract

Objective: To assess root canal morphological results and cleaning capacity in deciduous teeth instrumented with a reciprocating system. Material and Methods: 15 deciduous molars and a total of 24 canals were selected for the study. Nine teeth (13 canals) were selected at random for microbiological analysis and 6 teeth (11 canals) were used for tomographic analysis of morphology. The roots used for the microbiological assessment were contaminated with standard strains of Enterococcus faecalis. All roots were instrumented using the WaveOne System with a Small (21:06) 21 mm file and an X-Smart plus motor. Tomography was conducted with an I-CAT machine before and after instrumentation with the objective of analyzing the WaveOne System's shaping capacity. Statistics: Biostat 4.0 software was used to analyze results. The microbiological results (log10) and tomographic results (pixels) were analyzed using descriptive statistics and the Wilcoxon test. Results: There was a significant reduction in Enterococcus faecalis colony-forming units after instrumentation of the root canal systems of deciduous molars using the WaveOne system (p=0.0033) and significant enlargement of the root canal systems was observed after instrumentation (p=0.047), while morphology was maintained. Conclusion: The WaveOne System, using the Small file was effective for disinfection of the root canal systems of deciduous molars.

Assessment of Extruded Debris in Primary Molars Comparing Manual and Reciprocating Instrumentation

“…In a previous study [10], the authors used the small 21:06 CRT file of 21 mm in length, of the WaveOne system and it was observed that it was effective for disinfecting and modeling the root systems of primary molars [7,9].…”

“…The WaveOne system allows greater flow of irrigating solution by removing smaller amounts of dentin from the channel walls [6], thus reducing the extrusion of debris and reducing the risk of damaging or frustrating the instrument in irregular channels as presented the primary teeth [5][6][7]. This method has also been shown to be more effective in disinfecting the radial channels of deciduous molars [8][9][10].…”

“…The WaveOne system stands out also because it requires less work time compared to other techniques [9,10]. In pediatric dentistry, the use of techniques that reduce office work time by improving the quality of care and patient well-being are extremely important.…”

Shaping Properties and Outcomes of Nickel-Titanium Reciprocation Systems in Primary Teeth: A Systematic Review and Meta-Analysis of In Vitro Studies

“…The quantitative analysis was performed for five articles for instrumentation time and two articles for transportation due to a lack of data in the other articles. The reasons for exclusion [21][22][23][24] are presented in Table 1.…”

“…Burklein et al [21], Kishore et al [22] Studies done on permanent tooth Jeevanandan et al [23] Reciprocation motion used in hand files Pinheiro et al [24] No comparison/control group used…”