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PubMedDate not supplied

Effect of amine/sodium fluoride rinsing on toothbrush abrasion of softened enamel in situ.

The aim of this study was to test the effect of fluoride rinsing on the prevention of toothbrush abrasion of softened enamel in situ. For softening, the samples were immersed in 0.1 M citric acid (pH 3.5) for 3 min. Eight test subjects had to make 5 runs in which 4 slabs per run were attached to intraoral appliances. They were as follows: (1) no softening, no fluoride rinsing (control 1); (2) softening, no fluoride rinsing (control 2); (3) softening, rinsing in situ with a sodium/amine fluoride rinsing solution (250 ppm F) for 30 s; (4) rinsing in situ with the sodium/amine fluoride rinsing solution (250 ppm F) for 30 s, softening; (5) softening, rinsing in situ with an experimental amine fluoride-containing rinsing solution (250 ppm F) for 30 s. After exposure for 60 min to the oral milieu, the volunteers brushed the samples for 30 s with toothpaste and the loss of tooth substance was determined. For each test person, the secretion rate of resting and paraffin-stimulated saliva, buffering capacity and pH were measured. Toothbrush abrasion in situ was not significantly lower using the fluoride rinsing solutions before or after softening the enamel compared to no rinsing (p > 0.05). Multiple linear regression analyses revealed that 57% of the variation in toothbrush abrasion could be attributed to the severity of softening (p < 0.001) and the pH of stimulated saliva (p < 0.001). It was concluded that a single rinse for 30 s had no statistically significant effect on the prevention of toothbrush abrasion of softened enamel.

Adult↗
PubMedDate not supplied

Thickness measurement of worn molar cusps by ultrasound.

This study aimed to evaluate the effectiveness of an ultrasonic system for in vitro measurement of cusp tips of human teeth. Each worn cusp of 12 molar teeth was measured with an industrial ultrasonic system. The teeth were sectioned and measured by polarized light microscopy. The ultrasonic measurements and histological readings were moderately correlated (r = 0.601, p < 0.01). The ultrasonic system used in this study seemed a promising method for measuring thickness of worn cusp tips of extracted human molar teeth.

Dental Enamel↗
PubMed2006

In vitro evaluation of abrasion of eroded enamel by different manual, power and sonic toothbrushes.

This study aimed to evaluate the susceptibility of eroded enamel to brushing abrasion performed by manual, power or sonic toothbrushes. Bovine enamel samples were subjected to 5 cycles, each consisting of 5 min demineralisation, 15 min remineralisation and 10 min brushing in a machine. Toothbrushing with the activated electric devices was supplemented with 20 linear strokes/min. Furthermore, enamel specimens were brushed with 20 linear strokes/min or 80 linear strokes/min with the electric toothbrushes without their individual operating action. A manual brush was applied at 100, 20 or 80 linear strokes/min. Specimens of the control group were not brushed after demineralisation. Loss of enamel was determined by profilometry. For all groups, substrate loss for linear brushing treatment applying 20 or 80 strokes/min did not differ significantly from the control (4.97 +/- 1.49 microm). Three power toothbrushing treatments significantly increased abrasion compared to linear brushing treatment with 20 or 80 strokes/min in their inactivated condition. The results indicate that brushing treatment with power or sonic toothbrushes may lead to significantly higher loss of demineralised enamel compared to toothbrushing without power or sonic support.

Animals↗
PubMed2006

Tooth wear.

Explore the source record for details and available documents.

Dental Enamel↗
PubMed1997

Continuous monitoring of salivary flow rate and pH at the surface of the dentition following consumption of acidic beverages.

Use of a splint-mounted flexible pH electrode has allowed reliable continuous monitoring of pH at the surface of the dentition whilst still enabling subjects to drink normally. pH was monitored at the palatal upper left central incisor and upper right first permanent molar sites after drinking 1% (w/v) citric acid. A maximal decrease in pH to values of 2-3 was observed after 1 min followed by a slower recovery which was above pH 5.5 within 2 min at the former site and in 4-5 min at the latter site. A sharp rise in parotid saliva flow rate was seen at 1 min after drinking the same concentration of citric acid by glass, straw or feeder cup, which returned to resting levels within 6 min although the fall-off of flow rate was slower with the feeder cup. Thus, after dietary acid intake the pH at the surface of the dentition is below the critical pH for enamel dissolution for shorter periods than previously suggested, which is probably a reflection of salivary neutralisation and washing.

Adolescent↗
PubMed2005

Drug-induced disorders of teeth.

It is essential that every health care professional who is involved with the prescription or recommendation of drugs be fully aware of any resultant disorders that may arise as a side-effect. A range of drugs can affect the teeth. In this review article, drugs that have the potential to induce changes in teeth have been classified as those leading to tooth discoloration (intrinsic and extrinsic), physical damage to tooth structure (enamel, dentin, and cementum), and alteration in tooth sensitivity.

Carbohydrates↗
PubMed1994

The interface between orthodontics and restorative dentistry in the management of anterior tooth surface loss.

Anterior tooth surface loss is a significant problem, ideally requiring early recognition, diagnosis and prevention of progression. However, when first noted it is often sufficiently advanced to warrant treatment. Management should be aimed at minimizing further tooth surface loss and frequently benefits from an integration of treatment procedures. The problems, aims of treatment, and relevant treatment modalities are discussed, and two illustrative cases presented.

Acids↗
PubMed2000

The long-term management of patients with tooth surface loss treated using removable appliances.

The causes of tooth surface loss are multi-factorial and hence can be difficult to eradicate. This paper identifies the problems that may be anticipated during the long-term management of patients where tooth surface loss has been treated using removable appliances, where the number of teeth is often reduced. Wear and tear are inevitable and patients should therefore be made fully aware of the possibility of the gradual deterioration and failure of restorative work. Treatments should be planned, which would enable the dentist to recover the situation, with minimal inconvenience to the patient.

Dental Restoration, Permanent↗
PubMed2001

Treatment planning for the problem patient: restorative, ethical, legal and psychological perspectives. Case I: Emma.

'Emma' is the first of a series of four articles that aims to look at some of the problems patients may present with when they visit their dentist. Each article starts with a brief scenario about the hypothetical patient and his/her clinical problems. As well as the clinical problem, each case also raises ethical, legal or psychological problems. All of these issues are discussed and possible management strategies and treatment options described.

Adolescent↗
PubMed2002

Restorative management of the worn dentition: I. Aetiology and diagnosis.

In this, the first of a four-part series on the restorative management of the worn dentition, the aetiological factors, diagnosis of toothwear and preventive measures are summarized. Later papers will deal with the management of localized anterior and posterior toothwear, the use of 'Dahl type' appliances as an effective means for the restorations and the various treatment options for the management of the dentition showing generalized wear. The series will discuss the relative merits of the treatment strategies, clinical techniques and dental materials for the restoration of health, function and aesthetics for the dentition.

Acids↗
PubMedDate not supplied

Restorative management of the worn dentition: 3. Localized posterior toothwear.

In the management of localized posterior occlusal toothwear, care must be taken not only in determining whether the worn teeth are restorable, but also the desirable occlusal scheme. Assessments of the periodontal, endodontic, and coronal tooth tissues, and the occlusal relationship are necessary for a comprehensive treatment plan for worn posterior teeth.

Adult↗
PubMed2003

Use of tooth-coloured restorations in the management of toothwear.

The problem of toothwear appears to be increasing in both children and adults. Recent developments in bonding and aesthetic restorations have added to the dentist's armamentarium for restoring worn teeth. Bonded ceramic and composite restorations offer the possibility of conservative restoration of teeth already damaged by toothwear. Despite this, concern still remains regarding the durability and clinical performance of these restorations. This paper reviews the currently available techniques for providing tooth-coloured restorations in toothwear cases.

Adult↗
PubMed2004

A technique for simple and aesthetic treatment of anterior toothwear.

This article describes a technique for treating anterior toothwear. The technique allows the placement of direct composite on the palatal surface of upper anterior teeth in an efficient and accurate manner. The advantages of an indirect wax-up technique and a direct intra-oral approach are combined to give an aesthetic and conservative result.

Composite Resins↗
PubMed2004

Reviewing the concept of Dahl.

Toothwear may have a multifactorial aetiology but is often localized to the upper anterior teeth. This is normally accompanied by a loss of interocclusal space. This paper aims to outline the management of localized anterior toothwear. It discusses several options available to create space for anterior restoration, with particular reference to the use of the 'Dahl' technique. Dahl described a non-invasive technique to create increased interocclusal space. The increased space eliminates the need for further occlusal reduction during crown preparation which is ideal in the worn dentition. This paper illustrates and describes the clinical applications of Dahl's original technique.

Adult↗
PubMed2004

Providing a numerical measure of oral health--can it be done and how accurate is it?

An Index of Oral Health (OHX) was developed by Burke and Wilson in the mid 90s. Use of the index involves assessing patient comfort and satisfaction in addition to the assessment of caries, periodontal disease, toothwear, mucosa, occlusion and dentures, where appropriate. On completion of this structured examination, the clinician arrives at an overall oral health index (OHX) for the patient, which is expressed as a fraction of the maximum achievable score. The index was modified by Denplan UK by amending the calculations to produce the Oral Health Score (OHS). The Reproducibility of the OHX and OHS was tested at Birmingham Dental Hospital and School during 2001 and 2002 and was found to be satisfactory. The dentists' opinions on the OHX and OHS were assessed by means of questionnaires. Most of the dentists felt that both were easy to use.

Attitude of Health Personnel↗