Abstract
Postoperative pain is a frequent complication of root canal treatment. It could worse patients’ quality of life (QoL) and it may be associated to several factors, including the shaping technique. The aim of the study was to compare the impact of WaveOne Gold (WOG) and WaveOne Classic (WOC) reciprocating instrumentation on postoperative QoL after single-visit primary root canal treatment. Healthy subjects with pulp necrosis on multirooted teeth were observed. Canal shaping was performed with WaveOne Gold Primary (n = 25) or WaveOne Classic Primary (n = 29) and canal filling was completed with a carrier-based technique. Mean and maximum scores for postoperative pain were assessed through a Visual Analogue Scale (VAS) and QoL indicators were evaluated with a self-assessment questionnaire based on a Likert scale. Postoperative pain curves were similar in both groups (mean pain p = 0.43; maximum pain p = 0.27) and quality of life indicators showed no significant differences (p > 0.05). There was a more favourable trend of QoL values in the WOG group, reaching statistical significance on day six posttreatment (p = 0.021). Within the limitations of the study, reciprocating instrumentation may have an impact on patients’ QoL, but the innovative geometrical and alloy properties of the WaveOne Gold seemed to induce a faster resolution of the postoperative symptoms.
Highlights
The World Health Organization (WHO) defines the Quality of Life (QoL) as “an individual’s perception of their position in life in the context of the culture and value systems in which they live and in relation to their goals, expectations, standards and concerns” [1]
Previous studies evaluated the relationship between the root canal treatment and patient QoL and showed that several patients perceive it as a negative event, being frequently associated with pain [3,7]
The postoperative pain is frequently caused by debris extrusion beyond the apex during root canal shaping, such as dentinal chips, pulp debris, bacteria, and irrigants [9,15,16] and it has a great impact on patients’ QoL [9]
Summary
The World Health Organization (WHO) defines the Quality of Life (QoL) as “an individual’s perception of their position in life in the context of the culture and value systems in which they live and in relation to their goals, expectations, standards and concerns” [1]. The Nickel-Titanium (NiTi) reciprocating shaping instruments are associated with high cyclic fatigue resistance and respect of the canal anatomy [17,18,19]. They are claimed to promote greater debris extrusion and postoperative pain prevalence compared to rotary systems, negatively affecting patients’ QoL [20,21,22]. Several studies reported that rotary shaping is associated to better postoperative quality of life, probably due to a lesser amount of debris extrusion beyond the apex during the canal instrumentation [22,23]. There are no studies considering instruments with the same type of motion but different design and alloy properties
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