Table 3.
Summary of each study according to aim of the study and outcome
| Author | Year | Aim | Outcome |
|---|---|---|---|
| Neelakantan et al. | 2015 | Establish the influence of instrumentation technique, using single-file reciprocation or single-file rotary, on posttreatment pain regarding to the incidence, degree, and duration in a prospective multicenter clinical trial | The use of Reciproc instrumentation system showed significantly less intensity and longer duration of moderate and severe posttreatment pain compared to the single-file rotary system (one shape) in patients with symptomatic irreversible pulpitis with apical periodontitis. Although the exact reason for this was not assessed in this study, it may be attributed to the instrumentation kinematics |
| Nekoofar et al. | 2015 | Compare the incidence and intensity of postoperative pain after use of the WaveOne reciprocating system and the ProTaper Universal rotary system to prepare root canals in permanent human teeth | Postoperative pain lasted longer and was more intense in patients treated with the WaveOne system compared with the ProTaper Universal system. However, the differences seen in the intensity of pain may not be clinically significant and did not affect the analgesic regime chosen by patients |
| Pasqualini et al. | 2015 | Evaluate the impact of ProTaper rotary and WaveOne reciprocating file shaping techniques on immediate patient’s quality of life | Reciprocating motion by WaveOne had an impact on immediate postoperative discomfort, when performed in a single visit and when pre-existing periradicular inflammation was present, thereby negatively influencing patients’ quality of life |
| Çiçek et al. | 2016 | Compare the incidence and intensity of postoperative pain related to different root canal instrumentation techniques during single visit root canal treatment using ProTaper Next, WaveOne and Modified Step Back technique | All instrumentation techniques caused postoperative pain. The mean pain scores demonstrated that all techniques produced slight pain that caused mild discomfort and no need for additional treatment. It can be concluded that the modified step back technique can produce less pain compared to the ProTaper Next rotational and WaveOne reciprocal techniques especially in the 48 h period. The effect of instrumentation techniques on the incidence and intensity of postoperative pain should be well-evaluated |
| Kherlakian et al. | 2016 | Clinically compare the incidence of postoperative pain after the root canal preparation of posterior teeth using 2 reciprocating systems - Reciproc and WaveOne - and a continuous rotary system - ProTaper Next - through a prospective randomized trial. Analgesic medication intake by patients was also studied | The incidence of postoperative pain and the intake of analgesic medication prescribed for all the postoperative time points were similar across all types of instrumentation systems assessed in this study, the Reciproc, WaveOne and ProTaper Next |
| Krithikadatta et al. | 2016 | Compare the postinstrumentation pain following the use of WaveOne, Protaper and Mtwo Ni-Ti files | WaveOne reciprocating files cause more postintrumentation pain followed by Protapper and Mtwo. Caution should be exercised on instrument seletion for appropriate cases such as nonvital pulp with curved root canals |
| Relvas et al. | 2016 | Assess postoperative pain in a prospective randomized clinical trial comparing two groups, using the Reciproc system in one group and the ProTaper rotary system in the other. The primary outcome measure of the study was to assess if different instrumentation techniques influence the occurrence of postoperative pain | The different instrumentation techniques, Reciproc and ProTaper did not affect the occurrence of postoperative pain during the time intervals analyzed |
| Zand et al. | 2016 | Determine the severity of postoperative pain after using the single-file root canal preparation system with Reciproc system in comparison to preparation with RaCe system using the crown-down technique in necrotic teeth. The results of this study might help choose an appropriate technique for root canal treatment with less postoperative complications and discomfort | Based on the results of the present study; preparing and shaping the root canals in the necrotic mandibular molars with RaCe Rotary systems, resulted in less severe postoperative pain compared to the Reciproc files |
| Mollashahi et al. | 2017 | Compare intensity of postoperative pain after the root canal preparation of molars diagnosed with symptomatic irreversible pulpitis using three different instrumentation techniques: hand, single-file rotary (OneShape), and single-file reciprocating (Reciproc) systems | This study found significantly higher levels of postoperative pain in the control group using K-files compared to Reciproc and OneShape groups. No significant difference was found between Reciproc and OneShape groups in terms of pain after endodontic treatment. It seems that the instrumentation kinematics had no impact on intensity of postoperative pain |
| Shokraneh et al. | 2017 | Compare postoperative pain in patients with asymptomatic mandibular molar teeth with necrotic pulps and periapical lesions using three different instrumentation techniques: hand, multifile rotary (ProTaper Universal), and reciprocating single-file (Wave-One) instrumentation techniques | In patients with asymptomatic mandibular molar teeth with necrotic pulps and periapical lesions, preparation of the root canal system with the Wave-One reciprocating single-file instrumentation technique resulted in significantly less postoperative pain and needed for analgesic consumption than the multi-file rotary instrumentation technique with ProTaper Universal and hand instrumentation techniques |