PubMed · 3900428
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A J Laws. 1985. Coding systems for periodontal patients.. https://pubmed.ncbi.nlm.nih.gov/3900428/
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OBJECTIVE: The aim of this study was to describe in vivo effects of scaling and root planing associated with 980-nm diode laser irradiation on periodontally diseased root surfaces. BACKGROUND DATA: Rapid advances in the development of laser technologies used in dental offices demand careful evaluation of the respective histopathologic effects of each new system. There have been no reports of scaling and root planing associated with 980-nm diode laser effects on root surfaces after in vivo application. METHODS: Single rooted teeth and multiple rooted teeth considered for extraction due to severe periodontal disease were included in the study. For light microscopic investigation, a resin-embedding technique was used to cut the undecalcified teeth into 30-microm-thick cross-sections and stained. The following parameters were recorded by a blind examiner: remaining debris, root surface morphology, and thermal side effects. RESULTS: Root surfaces instrumented with hand instruments and diode laser in vivo did not show detectable surface alterations. There were no signs of thermal side effects in any of the teeth treated. CONCLUSION: The present in vivo study showed that associated therapy was suitable for non-surgical periodontal treatment. The results suggest that the diode laser may be routinely used as an adjunct to scaling and root planing without damage to the cementum tissue.
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BACKGROUND: Although diabetes mellitus and periodontal disease promote atherosclerosis, the relation of oxidative stress with these diseases remains unclear. To investigate the influence of periodontal disease on oxidative stress, we assessed the effects of initial periodontal therapy on lipid peroxide (LPO), an oxidative stress index, in type 2 diabetic and non-diabetic patients. METHODS: Seventeen subjects with or without type 2 diabetes were enrolled in this intervention study. No patient had a history of cardiovascular or peripheral vascular disease. Five type 2 diabetic and six non-diabetic patients, all with moderate to severe periodontal disease, received and completed the initial periodontal therapy and examination. Before and after the therapy, patients underwent medical examinations and blood determinations, including LPO. RESULTS: Before the therapy, the periodontal probing depth and bleeding on probing (BOP) were similar between groups. LPO, triglyceride, and white blood cell counts were significantly higher in diabetic than non-diabetic patients. Therapy improved the periodontal parameters in both groups and significantly decreased LPO in diabetic patients. Anti-malondialdehyde-modified low-density lipoprotein (MDA-LDL) antibody, a marker of oxidized LDL, significantly decreased with treatment in both groups. Overall, Spearman rank correlation showed no significance between periodontal parameters and LPO or anti-MDA-LDL antibody, but BOP tended to correlate with LPO in diabetic patients (r = 0.585; P = 0.0791). CONCLUSION: Although this is a small and preliminary study, and the changes of LPO and anti-MDA-LDL antibody were within the normal range, the initial periodontal therapy significantly decreased LPO, an oxidative stress index, in type 2 diabetic patients with periodontal disease.