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At least 325 records · Page 18Linked to original sources
PubMed1994

Case report: the use of indirect composite for the management of extensive erosion.

Erosive tooth surface loss due to acidic soft-drinks has been well documented. Unfortunately, the erosive danger, especially to young patients, of low calorie beverages seems less well appreciated. A clinical case is reported to highlight the problems that can occur with excessive exposure to such beverages. A method of restoring the damaged dentition using indirect composite is described. It is concluded that indirect composite may be particularly suited for the restoration of eroded dentitions, especially in young patients where aesthetics and repairability are important. Further clinical studies are necessary to assess the performance of these and other materials currently used in the management of erosive tooth wear.

Adolescent↗
PubMed1995

Direct pulp capping with a dentinal adhesive resin system: a pilot study.

The clinical and histological responses of exposed pulpal tissue after direct capping appear to be more closely related to bacterial infiltration than to direct material toxicity. Dentinal bonding agents have been suggested as a replacement for calcium hydroxide for pulpal protection. In this pilot study, direct pulp capping with a glutaraldehyde-containing dentinal adhesive was performed on eight permanent premolars and molars. The teeth were immediately restored with a resin composite restoration. The clinical technique included the use of a calcium hydroxide paste to cover the exposure site during completion of the preparation. Enamel and dentin were etched with phosphoric acid. All teeth remained vital and without symptoms during the initial observation period of 2 to 6 months.

Adult↗
PubMed1995

Bond strength and clinical evaluation of a new dentinal bonding agent to amalgam and resin composite.

Amalgambond Plus with HPA (high-performance additive) was evaluated for its ability to bond a resin composite and an amalgam to deep primary dentin. Tensile bond strengths for resin and amalgam were 6.40 +/- 2.17 MPa and 2.95 +/- 0.92 MPa, respectively. There was a statistically significant difference between the groups. The modes of failure of the specimens were 100% adhesive for amalgam and 76% adhesive-cohesive and 24% adhesive for resin composite. The clinical performance of amalgam and resin composite mesio-occlusodistal restorations bonded with Amalgambond Plus was also evaluated over 15 months. Periapical radiographs were taken to support the clinical examination. The following parameters were assessed: marginal adaptation, secondary caries, postoperative hypersensitivity, and retention. Both types of restoration exhibited excellent marginal adaptation and retention and no secondary caries or hypersensitivity.

Chi-Square Distribution↗
PubMed1995

Non-carious cervical tooth loss. Part 2: Management.

The aetiology, prevalence, diagnosis, prevention and monitoring of non-carious cervical tooth loss (NCTL) has been covered in the first article of this series. The aetiology of NCTL is usually multifactorial and may not be attributable to any single factor. Central to the successful management of NCTL is a correct diagnosis of the cause. This article will focus on the management of NCTL.

Composite Resins↗
PubMed1994

A 4th generation universal bonding system.

This paper reviews the fourth generation universal bonding system and highlights its supremacy over the earlier bonding systems. This new system has the ability to bond to all dentally related surfaces and its hydrophillic nature allows the advantage of bonding in a naturally moist environment. The effect of acid on dentine and the role of hydrophillic primers in the formation of a collagen-resin complex are described in relation to obtaining good bonding and adhesion. A new fourth generation universal bonding system. ALL-BOND 2, is discussed in the light of these developments and its features compared to those of the ideal bonding system.

Dental Bonding↗
PubMed1994

Biologic and clinical evaluation of Syntac and Variolink systems for cohesive pretreatment of hypersensitivity and definitive cementation.

Adhesive resin systems have become increasingly popular as they have been demonstrated to infiltrate conditioned vital dentin to cohesively hybridize the biologically altered substrates for adhesive bonding. This paper is a review of the biologic and clinical use of Syntac (Ivoclar Vivadent) and Variolink (Ivoclar Vivadent) adhesive systems for cohesive hybridization of vital dentin to prevent patient postoperative hypersensitivity and bacterial microleakage following clinical preparation.

Cementation↗
PubMed1997

Effect of HEMA-containing dentin desensitizers on shear bond strength of a resin cement.

PURPOSE: To determine whether the use of two HEMA-containing dentin desensitizing agents [Health-Dent Desensitizer with fluoride (H) or Gluma Desensitizer (G)], when applied at simulated "cavity preparation" and "cementation" appointments, affects the bond strength of lab processed resin composite restorations cemented to dentin. MATERIALS AND METHODS: The occlusal surfaces of 70 teeth were ground flat to expose dentin and polished to 600 grit. Teeth were randomly assigned to seven groups (n = 10). The treatments were applied in two sessions in order to simulate cavity preparation and cementation appointments. Water (W) was applied as a control instead of a desensitizing agent. H or G were applied for 30 seconds with a rubbing motion (1) at preparation appointment (HW and GW), or (2) at cementation appointment, after etching (WH and WG), or (3) at both sessions (HH and GG). In the control group, water was applied at both sessions (WW). All-Bond 2 and Dual Cement were used according to manufacturers' instructions to cement pre-polymerized resin composite cylinders (4 mm diameter) to the dentin surfaces using a force of 1.0 MPa. Specimens were thermocycled 300x and tested in shear until failure. Data was analyzed using one-way ANOVA and Tukey's HSD test at alpha = 0.05. RESULTS: Mean bond strength and standard deviations are reported in MPa: GW = 7.4 +/- 6.0; WW = 7.7 +/- 5.8; HW = 8.2 +/- 4.3; WH = 10.8 +/- 6.2; GG = 13.5 +/- 6.0; HH = 13.8 +/- 7.1; WG = 19.9 +/- 8.8. There were no significant differences in bond strengths for GW, WW, HW, WH and GG. Shear bond strength for WG and HH was significantly higher than all groups except for GG. Results of this in vitro study indicate that the use of desensitizers at the preparation and/or cementation appointment does not interfere with bond strengths of resin cement to dentin.

Analysis of Variance↗
PubMedDate not supplied

Caries detection methods: can they aid decision making for invasive sealant treatment?

The decision to place sealants is a difficult one, and it has been suggested that in a low risk population it may be efficient to wait until caries is detected in the fissure. An invasive sealant technique with fissure preparation may then be indicated. The diagnostic method used in the indication of such a procedure should accurately detect both dentine caries and sound fissures: high sensitivity for dentine caries (at D3 threshold) with high specificity for enamel caries (at D1 threshold). The aims of this study were to assess the diagnostic performance of selected diagnostic methods at normal cut-offs for traditional dentine caries detection and at reduced cut-offs in relation to the desired performance mentioned above, and to assess whether fissure opening allows for accurate visual detection of dentinal caries. Data were obtained from 230 occlusal sites of 101 extracted human molar teeth. Diagnostic methods used on the entire sample were: visual inspection, electrical conductance measurements and laser fluorescence measurements. The sample was then divided into two groups. Group 1 was subjected to visual inspection after application of a dye. Group 2 was subjected to visual inspection after fissure opening only, and after subsequent dye application. Validation was performed by histological investigation. The results with cut-offs normally used in dentine caries detection were roughly in accordance with the literature, except for laser fluorescence. The sensitivity of visual inspection for dentinal caries (D3) was 17% before and 70% after fissure opening. Using reduced cut-offs, a 100% sensitivity (D3) was achieved with 2 methods, but this also resulted in 63 or 87% false positive diagnoses of sound surfaces. Visual inspection and electrical methods both showed a moderate to high sensitivity (D3) with a higher than 50% specificity (D1). It was concluded that visual inspection and electrical methods at reduced cut-offs may aid the indication of invasive sealant treatment. The visual detection of dentinal caries is substantially increased, but not perfect after fissure opening.

Area Under Curve↗