| Objective:Through observing the effect of dental implantation surgery on the periodontal tissue after implantation restoration in patients with chronic periodontitis at different stages,clinicians can choose the timing of implantation according to these data.Methods: From September 2021 to December 2022,due to the chronic periodontitis,some patients hospitalized in our hospital were unable to retain or had lost their upper central incisors so that they required immediate implantation.These patients were selected and divided into three groups: immediate implant group,delayed implant group A,and delayed implant group B.The immediate implant group consisted of 15 teeth of patients with chronic periodontitis that were unable to retain and receive immediate implantation;delayed implant group A included 17 teeth that could not be preserved due to chronic periodontitis.Delayed implant group B included 14 teeth of the patients that had missed conventional delayed implantation.The amount of bone resorption around the implant at the time of crown insertion and 3 months after crown insertion were recorded by imaging examination in the three groups.The success rate of the implant after 3 months’ crown insertion was also recorded.At the same time,the researcher also collected red aesthetic score,periodontal probing depth,modified plaque index,and percentage of probing bleeding after 3 moths’ crown insertion.Results: 1.Statistical results of implant success rate: The implant success rates of the three groups of patients were 100%,100%,and 100%,respectively(p>0.05).There was no statistically significant difference between the three groups.2.Measuring results of bone absorption around the implant: Analysis of changes in bone absorption around the implant at the time of crown insertion and 3 months after crown insertion showed that there was no significant difference between the immediate implant group and the delayed implant group A(p<0.05),There was no significant difference between immediate implant group and delayed implant group B(p<0.05),and there was no statistically significant difference.3.Observation of PES score: Aesthetic evaluation of soft tissue was performed at the time of crown insertion and 3 months after crown insertion.It was found that the difference in PES between immediate implant group and delayed implant group A was not significant,while the difference in PES between immediate implant group and delayed implant group B was significant(p>0.05),with statistical significance.The difference in PES between delayed implant group A and delayed implant group B was significant(p>0.05),with statistical significance.More satisfactory gingival morphology can be obtained by immediate implantation or site preservation.4.Statistical results of relevant health indicators around the implant: At the time of crown insertion and 3 months after crown insertion,there was no significant difference between the immediate implant group and the delayed implant group A and B in terms of periodontal probing depth,plaque index,and probing bleeding index,There was no statistical difference between the two groups(p>0.05).Conclusion: 1.Both the immediate implant group and the delayed implant group of patients with chronic periodontitis can achieve a higher success rate,indicating that immediate implantation is feasible after extracting teeth that cannot be retained due to chronic periodontitis.After 3 months of crown restoration,there was no statistical difference in the depth of periodontal exploration and plaque index among the three groups,indicating that chronic periodontitis has no significant impact on the periodontal health around the implant after restoration when the periodontal condition is stable.Therefore,it is very necessary to improve preoperative periodontal treatment and to maintain periodontal condition actively after surgery.According to short-term clinical observation,In terms of soft tissue,patients with chronic periodontitis are better off with immediate or delayed implantation after preservation of the site than traditional delayed implantation.It is believed that immediate implantation or site preservation after tooth loss in chronic periodontitis can maintain the contour of tooth extraction socket in time and stabilize soft and hard tissues. |