This will count as one of your downloads.
You will have access to both the presentation and article (if available).
Methods: 10 patients were evaluated by conventional oral examination (COE) followed by direct visual fluorescence evaluation (DVFE) using VELscope. Areas clinically suspicious detected by COE or with positive DVFE (visual fluorescence loss (VFL)) have been further investigated using surgical biopsy. The association between COE and DVFE has also been assessed and compared with the gold standard, i.e. histopathology.
Results: Eight positive biopsies for malignant lesions were detected using COE and DVFE. Only one positive biopsy for a premalignant lesion was not in accordance with COE and DVFE. One of the lesions, determined on the VELscope and COE as a non-malignant lesion was also confirmed by the biopsy. Therefore, the VELscope system had a sensitivity of 100% and specificity of 50% in discriminating in situ normal mucosa from carcinoma or invasive carcinoma, compared with histology. The predictive positive value was 88.89% and the negative predictive value was 100% (95% confidence interval).
Conclusions: DFVE allows for simple and cost-effective margin determinations, in order to detect and screen oral precancerous and early cancerous disorders. We found that for the moment the VELscope system could not replace the histopathology procedure. Nonetheless, its usefulness for clinical examination was determined, as well as for monitoring oral lesions and guiding biopsies. Therefore, this method may add sensitivity to oral tissue examinations and be an effective adjunct procedure for high-risk patients.
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.
Methods: Thirty pediatric dental patients presented in the Department of Pedodontics, University of Medicine and Pharmacy „Victor Babeş”, Timişoara were evaluated using the Wong-Baker pain rating scale, wich was administered postoperatory to all patients, to assess their level of laser therapy acceptance.
Results: Wong-Baker faces pain rating scale (WBFPS) has good validity and high specificity; generally it’s easy for children to use, easy to compare and has good feasibility. Laser treatment has been accepted and tolerated by pediatric patients for its ability to reduce or eliminate pain. Around 70% of the total sample showed an excellent acceptance of laser dental treatment.
Conclusions: Laser technology is useful and effective in many clinical situations encountered in pediatric dentistry and a good level of pacient acceptance is reported during all laser procedures on hard and soft tissues.
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.
The aim of our investigations is to introduce new signal processing methods, based on wavelet continuous tranform, which express in a more sensitive manner the modifications of the flow flux signal with the state of the tooth, and to introduce new quantitative parameters, defined in a previous paper. These parameters express, in a more sensitive manner the modifications of the pulp flow flux signal in relation with the pulp tooth healt, and to introduce new quantitative parameters, defined in a previous paper. These parameters express, in a sensitive way the changes of the blood flux.
For practical investigations we used a series of signals recorded with the aid of a Laser Doppler Blood Flow Monitoring device (Moor Instruments) and processed with the computer.
Passivity of the bars manufactured using current technologies: laser-sintering, casting, and milling
This will count as one of your downloads.
You will have access to both the presentation and article (if available).
View contact details
No SPIE Account? Create one
