PubMed Health⌕ Search

SEARCH · PubMed Health

Results for “Tooth Wear”

Explore indexed PubMed citations for clinical trials, systematic reviews and public health research. Read source abstracts and follow each citation to its original PubMed record.

Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.

At least 379 records · Page 21Linked to original sources
PubMed2001

The measurement and prevention of erosion and abrasion.

OBJECTIVES: To develop a reproducible method to measure tooth wear and assess the protection given by dentine bonding agents in an erosive/abrasive wear regime. METHODS: Seal and Protect (Dentsply, UK) and Optibond Solo (Kerr, UK) were each applied to 20 extracted teeth and subjected to 3000 cycles in a reciprocating erosion/abrasion wear machine. A further 20 teeth, without protection, were subjected to the same wear regime and were either brushed in water or immersed in acid. Impressions were taken by a standardised technique and were scanned with a non-contacting laser profilometer. The amount of erosion was measured at the same co-ordinates before and after erosion using 2mm diameter metal discs as reference points. RESULTS: The amount of wear on Seal and Protect had a mean 24.8 microm (SD 57.4 microm) and for Solo it was 1.4 microm (24.5 microm), and this difference was statistically significant (p=0.02). There was no statistically significant difference in the wear measured on the teeth brushed in water or immersed in acid. The wear measured on the unprotected teeth was 243 microm (SD 120 microm) and was statistically significantly different to the protected surfaces (p=0.001). CONCLUSION: Both Seal and Protect and Solo protected the teeth in this wear regime and the technique could be used clinically for patients with uncontrolled dental erosion.

Analysis of Variance↗
PubMed2004

Bonding to and protecting worn palatal surfaces of teeth with dentine bonding agents.

Dentine bonding resins may play a role in protecting dentine against acids for patients with erosion. Therefore, it is important to try and understand what potential difficulties may ensue when bonding to worn dentine. This paper reviews the literature on the changes between normal and worn dentine and the effect of this on the bonding to composite resins. A medline search was undertaken using the terms erosion, tooth wear and dentine bonding up until the spring of 2003. Although there are changes on the surface of worn dentine, there is little evidence that this may affect the bond.

Acrylic Resins↗
PubMedDate not supplied

Toothbrush abrasion of erosively altered enamel after intraoral exposure to saliva: an in situ study.

The aim of this in situ study was to test the effect of toothbrush abrasion on enamel previously exposed to a standardized artificial erosive agent. To generate moderate erosive lesions, slabs of the buccal surface of human premolars were immersed in a solution of citric acid for 3 min. Then they were attached to intraoral appliances and each one was exposed for 0 min (= toothbrushing immediately after intraoral exposure), 30 or 60 min to the oral milieu of 1 of 7 female subjects with a mean age of 22 years. Immediately thereafter the volunteers brushed the slabs for 30 s with toothpaste using their preferred brushing technique. For each test person the secretion rate of resting and paraffin-stimulated saliva, buffering capacity and pH were measured. The following mean losses of substance at the surface were registered: 0.258+/-0.141 microm (toothbrushing immediately after intraoral exposure), 0. 224+/-0.087 microm (toothbrushing after intraoral exposure of 30 min) and 0.195+/-0.075 microm (toothbrushing after intraoral exposure of 60 min). Toothbrush abrasion in situ was significantly lower after 60-min exposure to the oral environment than after 0-min (p<0.001). Also, the 30- and 60-min values were significantly different from each other (p<0.001). Multiple linear regression analyses revealed that in this model toothbrush abrasion was associated with the intraoral exposure to saliva (p = 0.026), the severity of the erosive attack (p<0.001) and the secretion rate of resting saliva (p = 0.029). If no other preventive measures are taken we suggest that individuals at risk for erosive tooth wear wait at least 1 h before brushing their teeth after consuming erosive foodstuffs or beverages.

Adult↗
PubMed2005

Increased effect of harsh climate in red deer with a poor set of teeth.

Teeth are vital for mammal performance and especially in ungulates relying on mechanical decomposition of plant material for effective microbial digestion and energy uptake. The main focus of the role of teeth in ungulate life histories has been on tooth wear, while no one has addressed to what extent deviation from the natural set of teeth (maldentition) causes variation in individual fitness components. Based on mandibles from 41,066 individual red deer (Cervus elaphus L.) collected from 1969 to 2001, we tested whether maldentition had an effect on individual body condition and whether this effect depended on environmental harshness. Females with maldentition (0.6% of the population) were in a poorer condition than individuals without tooth anomalies and the effect increased during unfavorable climatic conditions. The effect of maldentition in males was less clear. This study indicates that a well-functioning set of teeth is essential for mammal performance, and that selection pressure against (dental) anomalies is more pronounced when climate is unfavorable.

Age Factors↗
PubMed1994

Bruxism: aetiology, clinical signs and symptoms.

The aetiology of bruxism and therefore its management is poorly understood by dentists and their focus on a local dental cause has lead to much unnecessary irreversible dental treatment, with little impact on the incidence of bruxism. Clinical and neurophysiological evidence suggests that there is a strong link between bruxism and tooth wear in man and its counterpart in animals. In animals, keeping teeth sharp has importance for food retrieval and defense. In man, although this is no longer necessary, remnants of this mechanism remain as an inherited predisposition.

Adaptation, Physiological↗
PubMed2001

Cupped lesions of early onset dental erosion in young southeast Queensland adults.

BACKGROUND: Dental erosion manifests as cupped lesions on cusp apices and in fissures of teeth in patients from southeast Queensland referred with excessive tooth wear. When found in young adults, these lesions may indicate early onset of active dental erosion. If the numbers and extent of cupped lesions increase with age, erosion may be a slow cumulative process. METHODS: This cross-sectional study recorded the presence or absence and the relative sizes of cupped lesions from all cusps and occlusal fissures on premolar and permanent molar teeth from study models by image analysis. Type-specimens of cupped lesions were examined. RESULTS: The incidence by tooth reflected time in the mouth, post-tooth emergence. A linear increase in lesion number and size, with age, was found. However, cupped lesions occurred on mandibular first molar cusp apices as often, and attained greater extent, in adults under 27 years compared with older subjects. CONCLUSION: Marked differences were found between lesion number and size, between maxillary and mandibular molar sites that reflect differences in salivary protection against dental erosion. The significance of this study is that the mandibular first permanent molar indicates the age of onset and severity of dental erosion.

Adolescent↗
PubMed1988

Early hominid diets from quantitative image analysis of dental microwear.

The dietary habits of the early hominids Australopithecus and Paranthropus have long been debated. Robinson argued that the two species differed in the proportions of meat and vegetables consumed. More recently it has been suggested that Paranthropus, with its presumably larger body size, simply processed greater amounts of the same foods eaten by Australopithecus to maintain 'functional equivalence'. Microscopic dental wear patterns are related to the dietary habits of extant mammals, and quantification of these patterns is useful in distinguishing among primates with different diets. Nevertheless, few attempts have been made to use microwear in the reconstruction of early hominid diets, and only very recently has the quantification of such data been initiated. While microwear fabrics can be reduced to individual elements (for example, scratches and pits), there is some disagreement over exactly how they should be defined and measured. Fourier transforms have been applied successfully in the study of a variety of physical and biological patterns, and recently they have been used to characterize and distinguish different tooth wear patterns more objectively. Here we report the first combined use of image processing and other quantitative techniques to analyse the dental microwear of early hominids. Our results suggest that Paranthropus ate substantially more hard food items than Australopithecus.

Animals↗
PubMed2004

Disability weights for the burden of oral disease in South Australia.

BACKGROUND: Australian burden of disease estimates appeared inconsistent with the reported repetitive and ubiquitous nature of dental problems. The aims of the study were to measure the nature, severity and duration of symptoms for specific oral conditions, and calculate disability weights from these measures. METHODS: Data were collected in 2001-02 from a random sample of South Australian dentists using mailed self-complete questionnaires. Dentists recorded the diagnosis of dental problems and provided patients with self-complete questionnaires to record the nature, severity and duration of symptoms using the EuroQol instrument. Data were available from 378 dentists (response rate = 60%). RESULTS: Disability weights were highest for pulpal infection (0.069), caries (0.044) and dentinal sensitivity (0.040), followed by denture problems (0.026), periodontal disease (0.023), failed restorations (0.019), tooth fractures (0.014) and tooth wear (0.011). Aesthetic problems had a low disability weight (0.002), and both recall/maintenance care and oral hygiene had adjusted weights of zero. CONCLUSIONS: Disability weights for caries (0.044), periodontal disease (0.023) and denture problems (0.026) in this study were higher than comparable oral health conditions in the Australian Burden of Disease and Injury Study (0.005 for caries involving a filling and 0.014 for caries involving an extraction, 0.007 for periodontal disease, and 0.004 for edentulism). A range of common problems such as pulpal infection, failed restorations and tooth fracture that were not included in the Australian Burden of Disease and Injury Study had relatively high disability weights. The inclusion of a fuller range of oral health problems along with revised disability weights would result in oral health accounting for a larger amount of disability than originally estimated.

Journal Article↗
PubMed2000

Restoring esthetics and anterior guidance in worn anterior teeth. A conservative multidisciplinary approach.

BACKGROUND: Developments in adhesive dentistry have given the dental profession new restorative materials and technology to restore esthetics and function to the worn anterior dentition. This article illustrates, through a clinical case study, the clinical requirements for restoring esthetic harmony and functional stability to the worn anterior dentition. CASE DESCRIPTION: The author presents the case of a 24-year-old man who sought esthetic dental treatment because he was unhappy with the appearance of his maxillary anterior teeth. The review of his dental history revealed that he ground his teeth at night. The author performed a complete evaluation of the causes of the patient's bruxism and created a diagnostic preview to, among other things, develop the relationship between the condylar and anterior guidance and to establish the esthetic requirements for the final restorations. Treatment included periodontal recontouring, tooth preparation and placement of temporary and then permanent restorations; the patient also was given an occlusal guard to protect the restorations against future bruxing. CLINICAL IMPLICATIONS: Whatever the cause of occlusal instability, it is important that the restorative dentist be able to recognize its signs--such as tooth hypermobility, tooth wear, periodontal breakdown, occlusal dimpling, stress fractures, exostosis, muscle enlargement and loss of posterior disclusion. When restoring the worn dentition, the clinician should bear in mind the five P's: proper planning prevents poor performance.

Adult↗
PubMed1990

Continuing tooth eruption and alveolar crest height in an eighteenth-century population from Spitalfields, east London.

Earlier studies on dried skulls have shown that continuing eruption occurs throughout life to an extent which appears to compensate for occlusal attrition. Some investigators have interpreted the increasing distance between the tooth cervical margin and the alveolar crest as an indication of horizontal bone loss due to chronic inflammatory periodontal disease. In order to determine whether continuing eruption occurs in the absence of attrition, measurements were made on the jaws of an eighteenth-century population whose tooth wear had been minimal. Horizontal bone loss at the alveolar margin was minimal or absent. Continuing eruption had occurred, indicating that facial height probably increased throughout the life time of the individuals.

Adolescent↗
PubMed1975

Atrophic rhinitis of pigs: abattoir studies.

The snouts of 2701 pork, bacon and heavy pigs killed at five abattoirs in England and Scotland during March to July 1974 were examined for evidence of atrophic rhinitis. Lesions were graded 1 to 5 according to severity. Suspicious lesions were present in 75-7 per cent of the sample. There was obvious atrophy of the turbinates in 44-7 per cent (grade 2 to 5) and severe atrophy in 17-5 per cent (grades 3 to 5). Foreign bodies were found in or between the posterior cheek teeth of 5-3 per cent of the sample. There was frequently an associated gingivitis. Other lesions seen included black discolouration of the teeth, severe tooth wear and osteoarthrosis of the temporomandibular joint. It was concluded that the incidence of atrophic rhinitis could have increased markedly since the last survey of the United Kingdom was undertaken in 1956/57 and some form of disease-monitoring service was urgently needed.

Abattoirs↗
PubMed2006

The Dahl principle: creating space and improving the biomechanical prognosis of anterior crowns.

There is an increased demand for restoration of anterior teeth based on esthetic requirements. Oftentimes, the teeth restored are compromised and have minimal remaining dentin after undergoing root canal treatment. Reduction of nonaxial forces by controlling incisal guidance is essential in improving the long-term prognosis of such situations. Another common complication when crowning anterior teeth is the lack of palatal space for restorative material. This is often evident in patients with anterior tooth wear and deep overbite. This article describes the Dahl principle, a conservative method for controlling incisal guidance and gaining palatal space for restorative material. A case presentation is used to illustrate the concepts discussed.

Aluminum Oxide↗
PubMed1996

Retrospective audit of patients with advanced toothwear restored with removable partial dentures.

The dental records of 50 patients with advanced tooth wear restored with removable prostheses were examined. Retrospective data were collected with regard to source of referral, presenting complaint, aetiological factors, clinical features, dentures provided, details of failures and maintenance. The maximum follow up period was three years. The ratio of male to female patients was 4:1 and the age range 31-75 years. Failures were recorded in 38% of patients with provisional and 64% with definitive dentures. The most common failure was fracture or wear of the incisal or occlusal surfaces. The majority of failures were addressed by adjustment of the dentures and the audit confirmed the need for regular maintenance.

Adult↗
PubMed2006

Restorative therapy of erosion.

When substance loss caused by erosive tooth wear reaches a certain degree, oral rehabilitation becomes necessary. Prior to the most recent decade, the severely eroded dentition could only be rehabilitated by the provision of extensive crown and bridge work or removable overdentures. As a result of the improvements in composite restorative materials, and in adhesive techniques, it has become possible to rehabilitate eroded dentitions in a less invasive manner. However, even today advanced erosive destruction requires the placement of more extensive restorations such as ceramic veneers or overlays and crowns. It has to be kept in mind that the etiology of the erosive lesions needs to be determined in order to halt the disease, otherwise the erosive process will continue to destroy tooth substance. This overview presents aspects concerning the restorative materials as well as the treatment options available to rehabilitate patients with erosion, from minimally invasive direct composite reconstructions to adhesively retained all-ceramic restorations. Restorative treatment is dependent on individual circumstances and the perceived needs and concerns of the patient. Long-term success is only possible when the cause is eliminated. In all situations, the restorative preparations have to follow the principles of minimally invasive treatment.

Ceramics↗
PubMed2006

Bruxism in children: a warning sign for psychological problems.

Bruxism is nonfunctional clenching or grinding of the teeth. It is a destructive habit that may result in tooth wear. Although research on bruxism is extensive, its etiology remains debatable. The literature suggests that bruxism is correlated with both experienced and anticipated life stress. The purpose of this report is to describe 2 cases of severe bruxism in children of similar age with different life histories and to discuss the factors that could have triggered this parafunctional condition.

Child↗
PubMedDate not supplied

A clinical investigation on three-unit fixed partial dentures fabricated with a lithium disilicate glass-ceramic.

A lithium disilicate glass-ceramic material has recently been developed for the fabrication of 3-unit fixed partial dentures. Conducted on 60 restorations, this initial trial attempted to define clinical indications and establish design principles for fixed partial dentures fabricated of this ceramic material. The design requisites varied depending on placement on the arch, and the authors concluded that lithium disilicate restorations caused reduced antagonist structure or opposing tooth wear. This investigation demonstrated that when a novel ceramic system was utilized for 3-unit restorations replacing up to the first premolar and attained minimal criteria for connector dimensions, an acceptable clinical success rate was achieved.

Adult↗
PubMed2003

An archeozoological analysis of teeth of lower jaw of pigs coming from the Kostolac culture (3,250-3,000 B.C.), originating from Vucedol, including comparison with recent.

An investigation has been made within the expertise regarding teeth of 10 left halves of mandibles of recent sows as well as teeth of 18 pig mandibles originating from Kostolac culture (3,250-3,000 B.C.) from Vucedol archaeological location. TWS (Tooth Wear Stage) has been determined at all molars, according to Grant method and a corresponding numerical equivalent has been added, so MWS (Mandibular Wear Stage) has been obtained by summing up the above. On the basis of these values and ranges of MWS, an approximate age at the time of death has been determined for each unit. All the recent units have been older than 17 months, while the age of Kostolac units has come out to be between 14 and 17 months.

Animals↗