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At least 271 records · Page 15Linked to original sources
PubMed1992

Dentin hypersensitivity treated with a fluoride-containing varnish or a light-cured glass-ionomer liner.

Dentin hypersensitivity in 112 teeth was randomly treated with Duraphat or Vitrabond. No patients were included unless they, without being asked, complained about daily pain for a long period of time caused by cold, warm, sweet, sour, touch or any combination of these five variables. Patients were excluded if the dentin hypersensitivity could have been caused by cervical abrasion/erosion lesions deeper than 1 mm, cracked-tooth syndrome, caries lesions, operative caries treatment, and/or periodontal surgery or root scaling within the last 6 months. The pain was registered on a binary scale: 1) pain before the treatment; and 2) pain/no pain after the treatment. With Duraphat, 22% of the treatments failed within 1 wk and the cumulative 1-yr success rate was 41%. With Vitrabond, 2% failed within the first week and the 1-yr success rate was 79%. The difference between the two treatments was highly significant. Patients in whom Duraphat failed were treated with Vitrabond and vice versa; the 1-yr success rate for the retreated teeth was 68% when "Duraphat-failures" were treated with Vitrabond and 42% when "Vitrabond-failures" were treated with Duraphat.

Adult↗
PubMed1996

Restorative therapy for erosive lesions.

More needs to be learned about the etiology of erosion lesions before they can be accurately diagnosed, confidently treated and, more importantly, prevented. The treatment is dependent on the location and the degree of erosion. The decision to treat an erosion lesion should be based on careful consideration of the etiology and progression of the condition. Reasons for restoring noncarious enamel/dentin lesions are discussed and various therapeutic measures are provided. Preventive and restorative therapeutic measures for noncarious abrasive/ erosive lesions are proposed such as: a change of dietary or behavior patterns; application of desensitization products; intensive fluoride therapy with or without iontophoresis; brushing with desensitizing dentifrices; adhesive penetration with dentin bonding agents; glass ionomers and compomers; resin composites; composite or porcelain veneers; crown and bridge work; occlusal adjustments and nightguard fabrication if the abfraction factor coincides. The clinical durability of restorative therapy and important clinical factors related to the restoration of multifactorial defects are discussed.

Composite Resins↗
PubMed2000

Treatment of dentinal hypersensitivity using a dentine bonding system.

AIMS AND OBJECTIVES: Many agents have been used in treatment of dentinal hypersensitivity in the past, but dentine bonding systems have recently been suggested as being effective. This study examined the effectiveness of a dentine bonding system in the treatment of dentinal hypersensitivity in dental practice conditions. METHODS: Dentists in two dental practices agreed to carry out the project. One practice was in the UK, the other in India. A total of 34 patients who were diagnosed to have dentinal hypersensitivity were treated using the dentine bonding system. Patients were requested to record their perception of their pain on a 100mm linear scale, pre-treatment, one day and one week post-treatment. RESULTS: All patients experienced relief of pain, both 1 day and 1 week after treatment. Profile plots of the patients' perceived pain scores for the two practices separately indicated that there was a general trend across both practices for these to fall quite sharply one day after treatment and then generally level out one week post-treatment. There was evidence indicating a possible difference in pain perception in the two communities from which the patients were drawn. CONCLUSION: The dentine bonding system evaluated was successful in reducing the pain of dentinal hypersensitivity, at least in the short term.

Analysis of Variance↗
PubMed1994

Structural evidence of a sealed tissue interface with a total-etch wet-bonding technique in vivo.

The resin-dentin interface of in vivo specimens restored with the All-Bond 2 system by use of a total-etch wet-bonding technique on vital deep human dentin was investigated by: (a) SEM examination of cryofractured specimens; (b) SEM examination of acid-rinsed, highly polished, embedded specimens; and (c) TEM examination of demineralized ultrathin sections. Ultrastructural features that were pertinent to the formation of an effective clinical seal were characterized. It is suggested that the establishment of an effective seal of the patent dentinal tubules following total etching is accomplished by: (1) the formation of an outer zone of a solid resin plug surrounded by a circumferential cuff of resin-impregnated dentin; and (2) the formation of an inner zone of a hollow resin sheath with resin globules along the internal walls of the tubules, closely adapting to the odontoblast process. The structural appearance and functional implications of these two zones were strikingly similar, with the sealing of exposed dentinal tubules in arrested carious lesions or cervical abfraction lesions. It appeared that there is a common denominator in physiologic isolation defense mechanisms and the total-etch, wet-bonding technique in the All-Bond 2 system in preserving the biological and morphological integrity of the pulpo-dentinal complex.

Acid Etching, Dental↗
PubMed2003

Integrating oxalate desensitizers with total-etch two-step adhesive.

Compromised bonding of total-etch adhesives to dentin treated with oxalate desensitizers results from the interference of a surface layer of acid-resistant crystals of calcium oxalate. We hypothesize that effective tubular occlusion and dentin bonding may be simultaneously achieved by depleting dentin surfaces of calcium with acids before desensitizer application. Dentin specimens treated with 4 oxalate desensitizers before or after being acid-etched were bonded with a two-step adhesive. Microtensile bond strengths ( micro TBS) were significantly lower, compared with the control, when oxalates were used before the specimens were acid-etched; in contrast, when oxalates were used after acid-etching. micro TBS were similar to nonoxalate-treated controls. Dentin surfaces and tubular orifices were covered with a surface layer of crystals when desensitizers were applied to fractured dentin and smear-layer-covered dentin before specimens were acid-etched. However, when the dentin was acid-etched prior to the application of oxalate desensitizers, the crystals were largely limited to the subsurface of dentinal tubules, where they did not interfere with subsequent resin bonding.

Acid Etching, Dental↗
PubMed2005

Incompatibility of oxalate desensitizers with acidic, fluoride-containing total-etch adhesives.

The use of oxalate desensitizers on acid-etched dentin prior to adhesive application can result in subsurface tubular occlusion by calcium oxalate crystals. However, the solubility of calcium oxalate increases in acidic solution. We hypothesized that total-etch adhesives can, depending upon their pH, interact with oxalate-desensitizer-treated dentin in an adverse manner. Acid-etched human dentin treated with 2 oxalate desensitizers (BisBlock and Super Seal) was bonded with 4 simplified total-etch adhesives: One-Step (OS), Single Bond (SB), OptiBond Solo Plus (OB), and Prime&Bond NT (PB). Composite-dentin beams were examined by SEM and TEM, both of which revealed numerous spherical globules on OB- and PB-bonded, desensitizer-treated dentin, but not in OS or SB samples. Bond strengths produced by OB and PB were significantly lower in oxalate-treated specimens than those produced by OS or SB. These surface globules may have interfered with hybridization of demineralized dentin with OB and PB resins and caused compromised bond strengths.

Analysis of Variance↗
PubMed1994

Update on dental composite restorations.

The rapidly changing area of dental composites can confound practitioners if they ignore material selection and correct techniques. The complex steps involved in placing composite restorations are explained to avoid potential problems and ensure complete success.

Composite Resins↗
PubMedDate not supplied

Efficacy of Gluma Desensitizer on dentin hypersensitivity in periodontally treated patients.

The aim of this double-blind, controlled, split-mouth designed clinical trial was to assess the effect of a single application of Gluma Desensitizer on alleviating dentin hypersensitivity. Twelve subjects entered the study and ten completed the protocol. Each subject had two teeth treated: one with Gluma Desensitizer according to the manufacturer's instructions and one with water. The assessment of pain was performed with the VAS (Visual Analogue Scale), after tactile (probe), thermal (cold blast of water) and thermal/evaporative (cold blast of air) stimuli at baseline, immediately after treatment, after 1 week and after 4 weeks. The mean VAS values for the test and control teeth were compared by the paired t test (alpha = 0.05). Repeated measurements ANOVA was used to compare the different experimental times. The results showed that for test teeth, at baseline, mean VAS values were 1.76 (+/- 2.82), 7.10 (+/- 2.10) and 4.75 (+/- 2.65), and, after 4 weeks, the mean values were 1.70 (+/- 2.31), 5.50 (+/- 3.30) and 4.61 (+/- 3.14), respectively for probe, water and air stimuli. For the control teeth, at baseline, the mean VAS values were 1.86 (+/- 2.92), 6.61 (+/- 2.31) and 4.08 (+/- 2.91) and, after 4 weeks, 2.66 (+/- 3.07), 6.32 (+/- 2.94) e 4.76 (+/- 3.26). There were no statistically significant differences between test and control teeth at any time. No intra-group differences were demonstrated either. It was concluded that Gluma Desensitizer had no effect on hypersensitive teeth from periodontally treated patients for a period up to 4 weeks.

Adult↗
PubMedDate not supplied

A posterior composite case utilizing the incremental and stratified layering technique.

Composite restorations should bring out the artist in the dentist. Today's composites are made to produce highly aesthetic, functioning restorations. There are several systems from which practitioners can choose, and the techniques for each system can be daunting. Composite restorations are conservative and a viable alternative, if proper protocol is followed. Each manufacturer has its own steps for applying its composites; however, by following the sound basic principles for bonded restorations, the practitioner can apply these procedures to every composite system. Thus, by utilizing proper techniques and understanding the material, one can both achieve a predictable outcome and desired aesthetics. The case study presented here illustrates the necessary steps required to achieve an anatomical, functional and aesthetic restoration.

Acid Etching, Dental↗