ABSTRACT
BACKGROUND: The aim of this study was to evaluate the effect on microleakage in Class V restorations of daily applications of artificial saliva, fluoride mouthrinses and chlorhexidine to irradiated bovine teeth. METHODS: Class V cavities were created in 60 bovine teeth. The teeth were divided randomly into two groups: the first group (n = 30) was subjected to radiotherapy until the teeth had received a total accumulated dose of 60 Gy; the second group (n = 30) was used as a control group. Both groups were divided into three subgroups (n = 10): in Group A teeth were submerged in Xeros Dentaid(®) artificial saliva; Group B teeth were submerged in a solution of 1% amine fluoride; Group C teeth were submerged in 0.12% chlorhexidine. All treatments were applied three times a day for six weeks. Afterwards microleakage into the composite restorations was measured using MIP4 image software. RESULTS: It was seen that radiation caused increases in microleakage in composite restorations. Statistically significant differences were found in the artificial saliva group (p = 0.013) and the chlorhexidine group (p = 0.023). CONCLUSIONS: Microleakage in composite restorations was greater among radiated teeth.
Subject(s)
Chlorhexidine/administration & dosage , Dental Caries/therapy , Dental Leakage/diagnosis , Dental Restoration, Permanent/classification , Fluorides/administration & dosage , Incisor/radiation effects , Saliva, Artificial/administration & dosage , Animals , Cattle , Composite Resins , Dental Caries/etiology , Dental Leakage/etiology , Dental Restoration, Permanent/methods , Radiation Dosage , Random AllocationABSTRACT
BACKGROUND: The oral mucosa is relatively vulnerable to pathological processes, and is often affected by autoimmune and malignant diseases. The oral epithelium is normally non-homogeneous, and joins to the connective tissue through interlocking of its downward projections in the form of papillae. OBJECTIVE: This study aims to conduct a histomorphometric study of the epithelial papillae in patients with oral lichen planus (OLP). MATERIAL AND METHOD: This study was based on 100 cheek mucosa biopsies from patients with OLP (66 white reticular and 34 atrophic-erosive) (13 males and 87 females, with a mean age of 54.95 +/- 13.64 years). A histological and morphometric evaluation was made, based on imaging analysis with MIP software 4.5 for studying the papillary structure in the patients with OLP. RESULTS: The mean epithelial thickness was 227.5 +/- 78.5 microm. The different papillary measures--BLS (distance from basal layer to epithelial surface), DPS (distance from dermal papilla top to epithelial surface), DPW (dermal papilla width), and DPD (interdermal papilla distance between two papillae)--yielded no statistically significant differences with respect to age, sex, smoking and clinical form. However, a significant correlation was observed in relation to papilla width and inflammatory infiltrate (P = 0.031). CONCLUSIONS: The application of this imaging system is useful for measuring variations in epithelial papillary architecture.
Subject(s)
Lichen Planus, Oral/pathology , Mouth Mucosa/pathology , Adult , Aged , Female , Humans , Male , Middle AgedABSTRACT
The objective was to study the knowledge and attitude on risk factors in oral cancer held by dental hygienists working in private dental practices in the Autonomous Community of Murcia, Spain. An anonymous phone survey was made after obtaining consent from the interviewee. A simple randomized study was carried out and 240 dental hygienists were selected. The questionnaire was divided into three different parts: (1) professional data and years of practice; (2) knowledge of the risk factors in oral cancer and (3) education and training needs on oral cancer. The response rate was 58.3%. Regarding knowledge of the risk factors in oral cancer, 100% correctly identified tobacco and 90% alcohol, while only 50.7% identified sun exposure with labial cancer. Only 51.4% of the dental hygienists routinely gave advice to their patients on prevention of oral cancer. Furthermore, 57.1% did not consider themselves sufficiently well trained to discover suspected oral cancer lesions, and 84.3% recognized that their academic training on the early diagnosis and prevention of oral cancer was insufficient for their professional activity. To reduce morbidity and mortality of oral cancer it is necessary to implement training programs on oral cancer for dental hygienists, so they may acquire the necessary skills for its detection and prevention.
