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Results for “TOOTH EXTRACTION”

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At least 19 recordsLinked to original sources
PubMed1990

Extraosseous and intraosseous oral traumatic neuromas and their association with tooth extraction.

Tooth extraction has been suggested as the most common etiologic factor in the development of oral traumatic neuroma, but intraosseous lesions are stated to be rare. The clinicopathologic features of 45 oral traumatic neuromas are reviewed. Fifteen cases were painful. Inflammatory infiltrate was present in 53% of the painful cases in contrast to only 17% of asymptomatic neuromas, and was the only light microscopic feature significantly related to the incidence of pain. Eleven of 45 cases were found in an intraosseous location. Four of 45 reviewed neuromas were associated with extractions. All 4 cases were painful and 2 of them were in an intraosseous location. Only 3 of the 15 painful cases and 2 of the remaining asymptomatic 30 cases had a tentative clinical diagnosis of traumatic neuroma before removal.

Adolescent↗
PubMed1998

The extracted tooth pontic--provisional replacement during bone graft and implant healing.

When tooth extraction is required, a provisional restoration may be utilized as an interim prosthesis during bone graft and implant healing. The selection of provisional replacement of the anterior teeth following extraction may have a direct influence on the success of the definitive tooth replacement. This article describes a technique for using the extracted tooth or a denture tooth as an interim prosthesis during bone graft and implant healing. This method of provisionalization offers several advantages, including no adjacent tooth preparation, natural appearance, and retention of the papillae.

Adult↗
PubMed1992

Keeping one in the air: iconography of the newly extracted tooth.

Tooth extraction remains a universally identifiable symbol of dentistry. Descriptions of the procedure in art and literature suggest three attributes of the dentist in the act of removing teeth: skill, power, and healing. Elements of the dentist's cultural identity are examined in light of the abundant imagery of dental extractions.

Cartoons as Topic↗
PubMed1992

The relative importance of reasons for tooth extraction in terms of potential tooth years of life lost (PYLL).

The aim of the present study was to introduce the potential tooth years of life lost (PYLL) approach to the analysis of data showing the incidence of tooth extraction according to the reason for extraction and to illustrate its use. Six sets of data from prospective nationwide questionnaire surveys of patients treated by systematic random samples of dentists in five European countries were translated into PYLL. Response rates ranged from 25 to 81 per cent and the number of extracted teeth from 959 to 29,397, according to the study. PYLL in Norway 1988 was calculated using the ages of 85 and 80 as cut-off points, or the average sex-specific remaining life expectancy at the age of extraction; otherwise the age of 85 was used. Mean PYLL for all reasons varied from 40.6 to 46.3 years for Norway in 1988 depending on the cut-off point used. For patients aged 21 and older PYLL85 ranged from 35.7 years for France in 1984 to 42.3 years for Sweden in 1959-61. Employing PYLL changed the rank order of the reasons for extraction based on the number of extracted teeth in some instances. It combined the two dimensions 'incidence of 'potential years of tooth function lost' into a continuous quantitative variable which was easy to understand and simple to handle analytically.

Adult↗
PubMed2002

Molecular cloning of wound inducible transcript (wit 3.0) differentially expressed in edentulous oral mucosa undergoing tooth extraction wound-healing.

Tooth extraction is the most commonly prescribed ablation surgery in dentistry and results in the formation of edentulous mucosa. Although the edentulous mucosa serves as the critical interfacial tissue for removable and implant-assisted prostheses, the structure and physiology of this wound-induced tissue are largely uninvestigated. We addressed the hypothesis that tooth extraction activates the expression of a unique set of genes in healing edentulous mucosa. Using the Differential Display Polymerase Chain Reaction and 5' Rapid Amplification of cDNA Ends protocols, we isolated overlapping cDNAs encoding a 3.0-kb-long mRNA, Wound Inducible Transcript, 3.0 (wit 3.0). In situ hybridization demonstrated that wit 3.0 was primarily expressed by the fibroblasts associated with tooth extraction wound-healing. Appearing to generate from the wit 3.0 gene, two alternative transcripts presented, encoding 215-(wit 3.0 alpha) and 253-(wit 3.0 beta) amino-acid-long peptides with the characteristics of an intracellular molecule. Analysis of these data may provide new clues to the molecular mechanism of edentulous mucosa formation.

Amino Acid Sequence↗
PubMed1993

Reasons for tooth extraction in the western states of Germany.

The purpose of this study was to collect information on the main causes of tooth loss in the western states of Germany as perceived by dentists and their patients. Sixty-eight dentists, out of 80 that were selected with a systematic random method for an epidemiological study in the western states of Germany, recorded their reason for tooth extraction. Included in the study were only extractions of permanent teeth during a period of 2 weeks (March 1990), up to a maximum of 20 patients per dentist. Of 926 returned questionnaires, 882 could be evaluated. In all 1215 teeth in 882 patients were extracted. The extraction of third molars was included as a reason, when caries, periodontal reasons and others were not indicated. Caries was the reason given for 20.7% of all extractions; periodontal diseases for 27.3%; caries and periodontal reasons for 18.7%; third molars for 14.7%; prosthetic reasons for 11.2%; orthodontic reasons for 4.1%; trauma for 0.4% and others for 2.9%. While caries is a major reason in all age groups, periodontal diseases and the combination of caries and periodontal reasons are more frequent than all other reasons for the age groups beyond 40 or 45 yr, respectively. The third molar was the most often extracted tooth. The patients were asked for their main reason for tooth extraction. For the patients, pain was the major reason for extraction (47.2%). According to the participating dentists periodontal disease is the most frequent cause of tooth extraction for people over 40 yr of age, while for those below 40 yr of age, caries and third molar extractions are the most frequent reasons.

Adolescent↗
PubMed1990

[Experimental study of bone resorption after tooth extraction with implanted hydroxyapatite tooth root substitute].

Hydroxyapatite (HAP) tooth root substitute implantation have been applied to extraction sockets in many studies for purpose of preservating alveolar bone. Dimensional changes were measured with sectioned study cast of cephalometric X-ray photo. In this study, dimensional changes were determined by newly developed evaluation system which utilizing image analyzer (Immunomedica Co., Ltd.), in a view of conserving alveolar ridges beneath the denture base. Cone shaped HAP tooth roots (5 or 6 mm in length) were implanted to one subject and disk-like shaped HAP tooth roots (2 mm in length) were also implanted to the other subject. Preservation of alveolar bone was observed in both shaped HAP tooth roots implanted site compared to control site. Bony ankylosis between HAP tooth root and alveolar bone, observed on 1 month after histological specimens, may contribute to this result. Smaller changes of blood flow compared to controls were obtained on implanted site, which were measured with Laser Doppler blood flow meter (Perimed KB; Sweden) on buccal mucosa. We consider that HAP shows good biocompatibility and HAP tooth roots implantation decrease the wound volume consequently.

Alveolar Bone Loss↗
PubMed2003

Connective tissue growth factor expressed in rat alveolar bone regeneration sites after tooth extraction.

OBJECTIVE: To understand bone regeneration process after tooth extraction could be a clue to develop a new strategy for alveolar bone reconstruction. Recently, accumulated evidences support that connective tissue growth factor (CTGF) is implicated in tissue repair of many tissues. In this study, we investigated the spatial and temporal expression of CTGF in the rat tooth extraction sockets. DESIGN: Five weeks old wild type male rats (weighing 120 g) were used for this experiment. Expression of CTGF was determined by immunohistochemistry and in situ hybridization in the rat upper molar tooth extraction sockets at 2, 4, 7, 10 and 14 days after tooth extraction. RESULTS: CTGF was expressed strongly in the endothelial cells migrating into the granulation tissue at the bottom of the sockets during 4 days after tooth extraction. During the reparative process, no apparent chondrocyte-like cell appeared in the sockets, while osteoblast-like cells proliferated in the sockets with low CTGF expression at 7, 10, 14 days after extraction. As expected, no staining was observed with the preimmune rabbit IgG and CTGF sense probe. CTGF may play an important role in angiogenesis and granulation tissue formation specifically at early healing stage after tooth extraction to initiate alveolar bone repair. CONCLUSION: CTGF was expressed at early healing stage of the rat tooth extraction wound.

Animals↗
PubMed2000

Early bone healing events following rat molar tooth extraction.

Healing of the rat tooth extraction socket occurs rapidly, indicating a mechanism for cancellous bone formation occurring swiftly throughout the matrix. The residual periodontal ligament is evident at 2 days after extraction and its rich collagen type III fibre content may form a template for future cancellous bone formation. In the remainder of the early tooth extraction socket, fibronectin staining was generalized. The widespread distribution of fibronectin staining has given rise to speculation that the function of fibronectin may be important in granulation tissue formation, by providing a template matrix for fibroblast migration. Osteoprogenitor cells migrated into the socket from the surrounding bone, and produced decorin and proMMP-13 (procollagenase-3). ProMMP-13 was only expressed at sites of new bone formation, e.g. the border of the recently formed trabecular islands or the periphery of the closing socket. Collagen type I fibres were formed later, and were especially evident at 6 days after extraction. The pattern of distribution of both collagen type I and III fibres were similar as they passed from the bone margin towards the centre of the socket - in the same direction as the forming bone trabeculae. Bone formation occurs by rapid movement of the osteoprogenitor cells along these collagen fibres to allow a rapid healing, rather than that of resorption followed by slow bone deposition.

Animals↗