Observation on the curative effect of CBCT-mediated ultrasonic bone knife combined with minimally invasive tooth extraction in the treatment of patients with impacted mandibular third molars
Objective To analyze the clinical efficacy of conical beam CT(CBCT)-mediated ultrasonic bone knife combined with minimally invasive tooth extraction in the treatment of patients with impacted mandibular third molars(IMTM).Methods 80 patients with IMTM were randomly divided into a control group and an observation group according to 1:1 ratio,with 40 cases in each group.Both groups underwent minimally invasive tooth extraction.The control group was treated with X-ray guided ultrasonic bone knife,and the observation group was treated with CBCT-mediated ultrasonic bone knife.The surgery-related indicators,occurrence of postoperative dental complications,and inflammatory indicators[serum interleukin(IL)-6,hypersensitive C-reactive protein(hs-CRP)and anti-P.gingivalis antibody(PgIgG)]before and after surgery were compared between the two groups.Results The observation group had shorter operation time of(15.58±2.39)min than(26.84±3.64)min in the control group,less blood loss of(3.82±0.48)ml than(6.18±0.53)ml in the control group;the observation group had postoperative facial swelling of(4.82±0.84)mm and mouth opening limitation of(4.13±0.64)mm,which were lower than(6.38±0.96)and(5.28±0.73)mm in the control group;the difference was significant(P<0.05).The incidence of postoperative dental complications in the observation group was slightly lower than that in the control group,but the difference was not significant(P>0.05).3 d after surgery,the levels of IL-6,hs-CRP and PgIgG in both groups were higher than those before surgery,but the increase amplitude in the observation group were lower than those in the control group(P<0.05).Conclusion CBCT-mediated ultrasonic bone knife combined with minimally invasive tooth extraction has a good effect in the treatment of IMTM,with short operation time,less blood loss,less inflammatory reaction,and can reduce postoperative mouth limitation and facial swelling without increasing postoperative complications,which is worthy of clinical promotion and application.
Conical beam CTUltrasonic bone knifeMinimally invasive tooth extractionImpacted mandibular third molars
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