| Objective:Periodontitis has become the main cause of dentition defect and dentition loss,and patients with periodontitis often have insufficient bone mass in the alveolar bone during dental implant surgery.With Guided Bone Regeneration(GBR),the quality of alveolar bone can be improved in patients with insufficient bone mass,the indications for implant restoration are expanded,and the success rate of planting is improved.However,it has been documented that the amount of bone resorption around the implant after implantation in patients with periodontitis is higher than that of patients with periodontal health.The purpose of this paper is to compare and analyze the difference in bone resorption around the implant after periodontitis and non-periodontitis patients under the premise of GBR.It is expected that the dentition defect or loss caused by periodontitis,and whether the patients with insufficient bone mass have pre-judgment of implant restoration and prognosis have certain clinical guiding significance.Methods:Thirty-five patients who were admitted to Anhui Provincial Hospital from June 2014 to June 2015 and received GBR during dental implants,15 males and 20 females,aged between 21 and 69,a total of 62 Body,as the object of this study.Divided into periodontitis group and non-periodontitis group.There were 15 cases of periodontitis group,8 males and 7 females,aged 39-67 years old,with an average of (53.40±9.14)years old,a total of 32 implants;20 cases of non-periodontitis group,7males There are 13 females,aged between 21 and 69 years old,with an average of(46.50±13.69)years old and a total of 30 implants.The periodontal test data during each patient's follow-up was counted,including probing depth(PD),plaque index(PLI),and gingival index(GI).The difference in alveolar bone resorption between patients with periodontitis and non-periodontitis after two years of loading and the effect of gingival condition on bone resorption were analyzed.Results:1 The mean PLI of the periodontitis group was(1.37 ± 0.52),the PD was(1.43 ± 0.30),and the GI was(10.05 ± 0.05),which was lower than non-periodontitis.Group height,PLI mean(1.30 ±0.46),PD(1.30 ±0.22),GI(0.84 ±0.45),but the difference was not statistically significant.(P > 0.05).2 In the periodontitis group,the near-medial and buccal lingual bone resorption were(1.33 ± 0.97)and(1.23 ± 0.72),respectively,and the difference was not statistically significant(P > 0.05);the near-medial and buccal lingual bone resorption in the non-periodontitis group were(0.83 ± 0.80)and(0.65 ± 0.62),respectively.The difference was not statistically significant(P > 0.05).3 The average bone resorption rate in the periodontitis group was(1.28 ± 0.68)mm,which was more than the average bone resorption in the non-periodontitis group(0.72± 0.62).The difference was statistically significant.(P < 0.05).4 Multiple linear regression analysis was used to compare the effect of periodontal factors on bone resorption around the implant.The gingival index(GI)was found to be significant(P = 0.03),while the plaque index(PLI)and depth of probing(PD)had no significant effect on mean bone resorption(P > 0.05).Conclusion:1 Using CBCT imaging data,it is possible to measure the amount of bone resorption around the implant in all directions after the dental implant has been repaired for 2 years.2 Patients with periodontitis who underwent periodontal treatment before surgery,had more bone resorption after 2 years of loading than non-periodontitis patients.3 Periodontal factors can affect the amount of bone resorption around the implant after dental implants.Patients with healthy periodontal growth have less bone resorption around the implant. |
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