| Objective To research the adjunctive effects of pulse Nd:YAG laser in the treatment of periodontitis.Methods 104 teeth with 34 patients were diagnosed chronic periodontitis in the Department of stomatology, the Fourth Affiliated Hospital of Guangxi Medical Univeristy from September 2009 to October 2010. Each patient of teeth distribution in oral at least two quadrants and which have not less than four sites of 4mm≤PD≤6mm , 2mm≤AL≤4mm. 34 patients with chronic periodontitis were randomly assigned to receiving either ultrasonic scaling combine with subgingival scaling or ultrasonic scaling combine with Nd:YAG laser (energy parameter 80mj/pulse ,10hz, exposure time 20s); The cases of laser group were cured every two days for three times. All parameters including plaque index(PLI),sulcus bleeding index (SBI ) ,probing depth (PD)of pocket,attachment loss(AL) were measured at baseline, 2,4 and twelve weeks after treatment.Results Two patients were excluded in the course of treatment.⑴There was no significant differences between two groups at two,four and twelve weeks after periodontal therapy in PLI,(P>0.05); SBI of test group was significant greater than that of control group at two weeks(P<0.05),however there have no significant differences at four and twelve weeks(P>0.05);⑵PD had a decreasing in tendency in both two groups at 4 weeks:laser group were 2.19mm and control group were 1.13mm ; attachment gain were 1.07mm and 0.64mm respectively. There were significant differences between the two groups (P<0.05); and the PD parameter continue to improved at 12 weeks.Compared with the control group, the test group had better clinical improvement.Conclusions There have a certain effects for the treatment of chronic periodontitis which use appropriate energy of pulse Nd: YAG laser as an adjunct method . Compared with the simple mechanical treatment, there have many advantage :easy to operate , shorter periodontal tissue healing time , less pain, more likely to accept and so on.
|
PDF Full Text Request