Reestablishing Esthetics With Extracted Teeth On A Mandibular Anterior Edentulous Area A Case Report.

Introduction: There is always a great anxiety in many patients when aesthetic impairment is involved after the removal of teeth, and this anxiety tends to be more significant. Immediate dentures for many years were considered to be a resorption-increasing factor. Well-fitting immediate dentures act as a bandage isolating the healing tissues from thermal and chemical damage and preventing food from entering the sockets. Case Report: A female patient of age 43 years treated with immediate partial denture with extracted lower incisors as a replacement with self cure acrylic denture base. Discussion: Within the past decade, as aesthetics have received more emphasis with treatment planning, resorption of the alveolar ridge following tooth extraction, especially in the anterior region has become a significant problem. There is a huge advantage of using the extracted teeth as a replacement as one of the strong indication for immediate is aesthetics. Conclusion: Immediate removable partial denture not only increases the aesthetic value, but also therapeutic purposes. For anterior region, where aesthetics is major concern, extracted teeth itself can be much helpful, which can provide excellent aesthetics.

Reasons for extraction of permanent teeth in Korea / 대한구강보건학회지

OBJECTIVES: The object of this study was to determine the reasons for tooth extractions of permanent teeth in Korea. METHODS: 2009 National patient samples (NPS) data were obtained for patients from the Health Insurance Review and Assessment (HIRA). We conducted a frequency analysis of the reasons for 93,176 permanent teeth extraction. RESULTS: Overall, periodontal disease was the most frequent reason for tooth extraction (54.9%), followed by dental caries (38.4%). The males lost more teeth, due to periodontal disease than the females. In the below 30 age groups, caries was the main reason for tooth extraction. However, periodontal disease was remarkably increasing in those aged that were 30 year old and over. CONCLUSIONS: Most of the permanent teeth are extracted, due to caries and periodontal disease. Furthermore, there has been no efficient way of prevention for periodontal disease in public health activities, which targeted the population of the middle age group. Such method might be required.

Quantitative analysis of optical coherence tomography images for early natural enamel caries / 国际生物医学工程杂志

Objective Quantitative analysis of optical coherence tomography (OCT) images of naturally occurred early enamel caries was performed to find quantitative parameter indicator for detecting early caries by OCT.Methods Three human premolars with enamel natural caries in D0,D1,and D2 stages were selected respectively and scanned by OCT.The ratios of the average gray value of the caries region (object region) and sound region (background region),namely,the object-background contrast (OBC) were calculated in OCT images and selected as the quantitative parameters to analyze the OBC trend of different degree of enamel caries.Results Within the fixed depth,the OBC value showed a trend of first increase and then decrease with the severity of dental caries,indicating that OBC value increased with the severity of dental caries from normal to D1 stage,and then decreased from D1 to D2 stage.Conclusion The OBC value can be used as a new quantitative indicator for OCT to estimate the severity of naturally occurred early caries.

Horizontal attachment loss in extracted teeth due to severe periodontitis / 대한치주과학회지

PURPOSE: The attachment level is strongly associated with tooth loss and provides useful information on patterns of destruction of the periodontium. The presence of horizontal attachment loss would not be detected in clinical measurement. Therefore, the purpose of the present study was to estimate the patterns of periodontal destruction based on the attachemnt area and horizontal attachment loss in extracted teeth due to severe periodontitis. MATERIALS AND METHODS: 307 teeth satisfied the criteria for assessment. An indirect method, based on digital images obtained from a digital camera and an image analysis program, was used to calculate the area of root surface and attachment loss and the extent of horizontal attachment loss. The data were analysed using SPSS. RESULTS: No statistically significant differences among root surfaces were observed in anterior teeth on the loss of attachment area. However, in posterior teeth statistically significant differences in palatal surfaces of maxillary and mandibular premolar and molar surfaces compared with buccal surfaces were observed. Horizontal attachment loss was observed in 21.5% of the teeth examined. Frequency of horizontal attachment loss was highest in the maxillary first premolar (34.8%), followed by the maxillary second premolar (27.3%) and maxillary canine (25%). The mean length of horizontal attachment loss was 1.5mm. CONCLUSION: More meticulous examination will be needed of the palatal surfaces of maxillary and mandibular premolar and molar teeth. The percentage of teeth with horizontal attachment loss greater than 2.1 mm was 5.2%. Considering the length of curette blades, about 5.2% of teeth were not properly debrided. Therefore, Additional supportive therapy such as local drug delivery has to be considered in treatment of the first maxillary, second premolar and canine due to the high prevalence of horizontal attachment loss.

Periodontal attachment loss of extracted teeth for periodontal reasons / 대한치주과학회지

The factors influencing long-term prognosis of teeth must be carefully considered. Among these, attachment level is strongly associated with tooth loss. The purpose of the present study was to estimate pattern of attachment loss based on attachment area in extracted teeth. 197 satisfied the criteria for assessment after staining. The protocol described by Waerhaug(1975) was performed. An indir ect method, based on digital image abstracted from digital camera and digital imaging software program, was used to calculate the root surface area and the attachment loss area. The data were analysed using SPSS. Except maxillary central incisior and mandibular canine, no statistical significant differences between each root surfaces were observed in anterior teeth. In posterior teeth, statistical significant differences in palatal surface of maxillary molar and mandibular molar compared with others were observed. Statistical significant difference in buccal surface compared with others was lowly observed in single and multi rooted. This study did not reveal progressive loss pattern of attachment area in each root surface but clarified root surface that has relative high loss rate of attachment area at extraction. Thus understanding this pattern of attachment loss is helpful for dentist to treat the periodontitis.