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At least 487 records · Page 27Linked to original sources
PubMed2005

IPR: intraoral pressure-dependent registration in Cerec application.

Cerec 3D software is now able to restore occlusal tooth surfaces safely and reproducibly. With an existing morphology worth adopting and/or by making use of an opposing bite registration, the user can reproduce the central contacts to the opposing jaw with the aid of the correlation mode. However, this assumes that the existing maxillo-mandibular relation is physiological. In prosthetic treatment, it is essential to differentiate between a healthy patient and patients with functional disorders. In the first case, the possibilities of performing an accurate and exact reconstruction of the healthy parameters are given and can be myocentrically controlled and corrected with suitable means. However, in the presence of functional disorders, the pathological situation should not serve at the basis for the reconstruction. Adjustment and, if necessary, stabilization of the function is essential. The following article illustrates by reference to a complex patient case how Cerec restorations can be produced correctly chairside with the aid of the IPR technique even in the case of functional disorders.

Adult↗
PubMedDate not supplied

An uncommon dental presentation during pregnancy resulting from multiple eating disorders: pica and bulimia: case report.

Pica is a compulsive eating disorder involving non-nutritive substances. The etiology of this eating disorder is unknown but it often is associated with subclinical mineral deficiencies. This article focuses on the simultaneous occurrence of two types of eating disorders, the co-existence of depression during four pregnancies, and the resulting dental clinical implications. The literature is substantial enough to support a possible etiological association between these eating disorders and depression during pregnancy. Associations between eating psychopathology, depression, and anxiety have been described consistently. The diagnosis of pica and the dental treatment related to it are not a common part of most dental practices; knowing the clinical features and detecting the condition depend on careful questioning and diligence. At present, no one has described the physiologic or psychological basis for pica. This article reviews the published literature pertaining to pica, specifically pagophagia.

Bulimia↗
PubMedDate not supplied

Tooth wear among psychiatric patients: prevalence, distribution, and associated factors.

PURPOSE: The purpose of this study was to evaluate the prevalence, distribution, and associated factors of tooth wear among psychiatric patients. MATERIALS AND METHODS: Tooth wear was evaluated using the tooth wear index with scores ranging from 0 to 4. The presence of predisposing factors was recorded in 143 psychiatric patients attending the outpatient clinic at the Prince Rashed Hospital in northern Jordan. RESULTS: The prevalence of a tooth wear score of 3 in at least one tooth was 90.9%. Patients in the age group 16 to 25 had the lowest prevalence (78.6%) of tooth wear. Increasing age was found to be a significant risk factor for the prevalence of tooth wear (P < .005). The occlusal/incisal surfaces were the most affected by wear, with mandibular teeth being more affected than maxillary teeth, followed by the palatal surface of the maxillary anterior teeth and then the buccal/labial surface of the mandibular teeth. The factors found to be associated with tooth wear were age, retirement and unemployment, masseter muscle pain, depression, and anxiety. CONCLUSION: Patients' psychiatric condition and prescribed medication may be considered factors that influence tooth wear.

Adolescent↗
PubMed2006

Clinical evaluation of self-etch adhesives in Class V non-carious lesions.

PURPOSE: To evaluate the clinical performance of two self-etching and one total-etch adhesives in Class V non-carious cervical lesions (NCCL). METHODS: Two self-etching primers, Clearfil SE Bond and Hybrid Bond, and one total etch adhesive, Admira Bond, were placed in 195 NCCL. Restorations were evaluated at baseline, 1 and 2 years using the USPHS criteria. RESULTS: No restoration was lost after 1 and 2 years for all materials. There was no significant difference between the baseline and 2-year results for Admira Bond and Clearfil SE Bond restorations. In contrast, Hybrid Bond restorations showed significant deterioration in marginal adaptation and cavosurface marginal discoloration after 2 years. Also, there was no significant difference between Admira Bond and Clearfil SE Bond at each recall period.

Acid Etching, Dental↗
PubMed2006

[Micro-tensile bond strength to sclerotic dentin in non-carious cervical lesions].

OBJECTIVE: This in vitro study was to evaluate the micro-tensile bond strength (microTBS) of three adhesives to sclerotic dentin in non-carious cervical lesions. METHODS: The maxillary premolars extracted due to periodontitis and with non-carious cervical lesions were collected. The non-carious, natural cervical sclerotic lesions were bonded with a total-etching adhesive Scotchbond Multi-Purpose, a two-step self-etching adhesive Contax, and an all-in-one self-etching adhesive Adper Prompt L-Pop. Artificially prepared wedge-shaped lesions were also made in sound premolars and bonded with the same adhesives as the controls. MicroTBS of these three adhesives was measured. RESULTS: MicroTBS of Scotchbond and Contax to sclerotic dentin was significantly lower than to normal dentin. But microTBS of Adper Prompt L-Pop to normal dentin was significantly lower than to sclerotic dentin. MicroTBS to sclerotic dentin was Scotchbond 46.805 MPa, Adper Prompt L-Pop 39.045 MPa, and Contax 29.852 MPa. CONCLUSIONS: In sclerotic dentin the microTBS was decreased because of the inferior micro-morphology of resin tags. Adhesives with low pH value might bond to sclerotic dentin effectively.

Bisphenol A-Glycidyl Methacrylate↗
PubMedDate not supplied

Impact of tooth wear on daily living.

PURPOSE: The aim of this study was to identify the effects of tooth wear on patients' quality of life and satisfaction with their dentition. MATERIALS AND METHODS: Seventy-six tooth wear patients and 76 control subjects were recruited for the study. A Dental Impact on Daily Living questionnaire was used to assess the affect of tooth wear on daily living and satisfaction with the dentition. An ordinal scale was used to assess the severity of tooth wear in a patient cohort. RESULTS: The results showed that tooth wear has a measurable impact on patients' satisfaction with their appearance, pain levels, oral comfort, general performance, and chewing and eating capacity (P < .001). CONCLUSION: Tooth wear has an impact on patients' satisfaction with their dentition regardless of tooth wear severity or personal factors.

Activities of Daily Living↗
PubMed1991

The role of functional occlusal relationships in temporomandibular disorders: a review.

This review highlights the consensus existing in past research on the role of functional occlusal factors in the pathophysiology of temporomandibular disorders (TMD). The functional occlusal relationships considered are balancing and working occlusal contacts, length and symmetry of retruded contact position-intercuspal position (RCP-ICP) slides, occlusal guidance patterns, parafunction, and dental attrition. Controlled studies fail to demonstrate any association between occlusal interferences and TMD signs or symptoms. Temporomandibular joint condylar autorepositioning secondary to intracapsular arthrosis is associated with larger and asymmetric RCP-ICP slides. Other TMD conditions are not associated with any slide length or asymmetries. Occlusal guidance patterns are not associated with TMD symptom provocation or, conversely, health. Parafunction appears to be universal and is not associated with TMD development or symptomatology in healthy individuals. Furthermore, parafunction is not provoked by longstanding, naturally occurring occlusal variations. Dental attrition is not associated with TMD, and any observed increased attrition in osteoarthrosis patients is likely the result of age effects and occlusal alterations secondary to condylar positional changes.

Bruxism↗
PubMedDate not supplied

Association between primary dentition wear and clinical temporomandibular dysfunction signs.

Dental wear facets often are considered indicators of temporomandibular dysfunction (TMD). Dental wear facets are common in children, but their association with TMD signs is unknown. A reproducible, clinical evaluation of TMD signs for young children shows no statistically significant association between primary dentition wear facets and clinical signs of TMD (P less than or equal to 0.05). Wear facets in young children do not appear to warrant TMD evaluation or treatment.

Chi-Square Distribution↗
PubMed1991

Modulatory effect of fluoride and irradiation on rat molar rate of wear.

The hypothesis was tested that fluoride (F-) modulates molar wear rate in the irradiated rat and that enamel solubility and dentin hardness are involved in this process. Seventy five 21 day-old rats were divided into 5 groups. Groups received either F-(25 ppm) in the drinking water or irradiation to the head (15 Gy in a single dose), or a combination of the two. The rate of occlusal wear was assessed by computerized planimetry. The amount of wear was significantly higher in the F- and irradiation monotreated rats, while under combined treatment it did nor differ significantly from the control values. Fluoridation or irradiation suppressed enamel solubility, as measured by calcium release in the etchant. Dentin microhardness, expressed in Vickers hardness number, was enhanced after either treatment, but remained unaffected when F- administration preceded irradiation. Enamel solubility and dentin microhardness did not correlate significantly with the rate of occlusal wear.

Animals↗
PubMed1991

Clinical evaluation of direct esthetic restorations in cervical abrasion/erosion lesions: one-year results.

One hundred sixteen cervical abrasion/erosion lesions were restored with one of the following techniques: (1) glass-ionomer cement, (2) composite resin with a dentinal bonding agent, or (3) composite resin with a glass-ionomer cement liner and a dentinal bonding agent. The restorations were assessed at baseline and at 6 months and 1 year postrestoration for retention, caries, color match, marginal staining, and surface texture. No statistically significant differences were found in retention, caries, color match, or marginal staining. A statistically significant difference was found with regard to surface texture: glass-ionomer cement restorations demonstrated a rougher surface than did the composite resin restorations. A substantial number of restorations composed of composite resin with a dentinal bonding agent demonstrated a color shift towards mismatch when evaluated at 6 months. This difference was not significant at the 1-year followup.

Bisphenol A-Glycidyl Methacrylate↗
PubMed1991

Some facets of tooth wear.

Tooth wear seems to be an increasing problem, particularly amongst older patients who are retaining their teeth for longer. Having survived the ravages of caries and periodontal disease, they are then at risk of wearing out their dentition. Diagnosis and a full understanding of the aetiology is crucial to the effective management of unacceptable levels of tooth wear. Monitoring over a long period is helpful in planning life long management. There are specific treatment techniques which are useful in restoring badly worn teeth.

Humans↗
PubMed1991

[Esthetic restorations and occlusal stress].

The purpose of this work is to value reconstructions on conoid, abraded and fractured elements made using an hybrid composite. Results have been excellent either functionally or aesthetically.

Composite Resins↗