Effects of Crown Lengthening on Bi, PLI and PD Levels in Patients with Different Periodontal Biotypes

Objective:To investigate the effect of crown lengthening on patients with different periodontal biological types.Methods:60 patients with different periodontal biotypes treated in our hospital from May 2017 to February 2019 were retrospectively analyzed.According to the different periodontal biotypes,the above-mentioned patients were further divided into control group(thin fan type,30 cases)and observation group(thick flat type,30 cases).The periodontal probing depth(PD),plaque index(PLI),bleeding index(BI)and gingival margin position at 1 week,1 month,2 months and 3 months after operation were compared between the two groups.Results:The PD,Bi and PLI values of the two groups after treatment were lower than those before treatment(P<0.05);There was no significant difference in gingival margin position between the two groups after 1 week to 1 month and 1 month to 2 months(P>0.05);After 2 months to 3 months of treatment,the gingival margin distance of the observation group was larger than that of the control group,and the difference was statistically significant(P<0.05).Conclusion:Crown lengthening can effectively improve the periodontal indexes of different periodontal biotypes,and the gingival margin of thick and flat type patients moves more toward the crown.

Application of Laser Technology in Fixed Prosthodontics <br/>—A Review of the Literature

Introducing laser light in prosthetic dentistry opens a new era on the treatment modules with new impact in the quality of prosthodontics treatments, with hope of overcoming some of the drawbacks posed by the conventional methods of fixed prosthodontics procedures. Laser techniques cause less pain than traditional methods and eliminate the noise of instrumentals that some fearful patients who have long term neglected care and those have complex medical histories and required more specialized care, could use the advantage of laser in their treatment plan. The aim of the articles review is to highlight the current and emerging application of laser in fixed prosthodontics treatment to be used in conjunction or as replacement for traditional methods based on the research that support the indication described.