The effect of Nd：YAG lasers used in root canal therapy：a Meta ⁃ analysis

Abstract

Objective Meta⁃analysis was used to assess the effect of Nd: YAG Lasers used in root canal therapy. Methods A search of literatures about clinical effect of Nd:YAG lasers in root canal therapy in PubMed, Embase, Co⁃ chrane Library, CMCC, CNKI, VIP, Wanfang databases was conducted from 1997 to 2015. The quality of included stud⁃ ies was stringently evaluated and data was analyzed by the RevMan 5.3 software. Results 8 studies were included in the Meta⁃analysis. Meta⁃analysis results showed that the ratio of the occurrence of endodontic interappointment emergen⁃ cies (EIAE) of 24 ~ 48 hours and 1 week after the therapy was significantly lower in the Nd: YAG lasers group com⁃ pared with the control group (24 h: OR = 0.27, 95％CI = 0.15 ~ 0.48; 1week: OR = 0.26, 95％CI = 0.13 ~ 0.54). The six months to one year failure rate of root canal therapy was lower in Nd:YAG lasers group compared with the control group, the differences were statistically significant (OR = 0.24, 95％CI = 0.06 ~ 1.00). Conclusion The use of Nd: YAG laser in root canal therapy relieves post⁃treatment pain response after the therapy and also reduces the long⁃term failure rate of root canal treatment.

Keywords

• Nd:YAG laser
• Root canal therapy
• Meta ⁃ analysis
• Endodontic interappointment emergencies
• Failure rate