Aim: The present study aims to assess the level of vascularisation of the lower frontal gingiva of smoker patients, in comparison with non-smokers by using Laser Doppler Flowmetry (LDF), in order to determine the changes in gingival microcirculation. Material & methods: 16 volunteers were included in this study and separated into 2 equal groups: non-smoker subjects in Group I and smoker subjects in Group II. All patients were submitted to a visual examination and professional cleaning The gingival bloodflow of each patient was recorded in 5 zones using LDF, resulting in a total of 80 recordings. LDF was done with the Moor Instruments Ltd. "moorLAB“ Laser Doppler. All data were collected as graphs, raw values and statistically analyzed.
Results: After strict analysis results show that Group II presents a steady level of gingival microcirculation with even patterns in the graph, while Group I shows many signs of damage to it‘s microvascular system through many irregularities in the microcirculation level and graph patterns. Conclusion: The results suggest that prolonged smoking has a definitive effect on the gingival vascularisation making it a key factor in periodontal pathology.
AIM: The aim of this study is to detect incipient caries and enamel demineralization using laser fluorescence.This serves only as an auxilary aid to identify and to monitor the development of these lesions.
MATERIALS AND METHODS: 6 patients were involved in this study, three females and three male. Each patient underwent a professional cleaning, visual examination of the oral cavity, and then direct inspection using DiagnoCam and DIAGNOdent. After data recording each patient was submitted to retro-alveolar X-ray on teeth that were detected with enamel lesions. All data was collected and analyzed statistically.
RESULTS: Of 36 areas considered in clinically healthy, 24 carious surfaces were found using laser fluorescence, a totally non-invasive method for detecting incipient carious lesions compared with the radiographic examination.
CONCLUSIONS: This method has good applicability for patients because it improves treatment plan by early detection of caries and involves less fear for anxious patients and children.
The present study aims to assess the pulp vitality before and after different tooth bleaching procedures, in order to
determine the changes in pulpal microcirculation and whether they are reversible or not. Twelve volunteers were
included in this study. For each volunteer, the pulpal blood flow of maxillary teeth was assessed prior to treatment using
Laser Doppler Flowmetry. The “in office” bleaching technique was used 6 anterior teeth, with two different gels, a
conventional one chemically activated (Group I 3teeth) and another one activated using Nd:YAG laser (Group II-3
teeth). The bleaching agents were applied on counterpart teeth and, after obtaining a esthetic results for each tooth, the
pulpal blood flow was assessed using Laser Doppler Flowmetry immediately after treatment and then after one day and
one week. All data were collected and statistically analyzed. Immediately after treatment, the assessment showed an
increase of pulpal blood flow, for both study groups, but higher in Group I as compared to Group II (p<0.005). The
subsequent assessments showed a reduction of the pulpal blood flow with non – significant differences between the study
groups (p<0.005).The results suggest that the tooth bleaching procedurere presents a safe treatment method, which does
not lead to irreversible damage to the dental pulp, when used correctly.
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