J Interdiscip Dentistry
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Year : 2012  |  Volume : 2  |  Issue : 2  |  Page : 92-97

Clinical evaluation of the efficacy of bioactive glass and strontium chloride for treatment of dentinal hypersensitivity

Department of Conservative Dentistry and Endodontics, M. R. Ambedkar Dental College and Hospital, No 1/36, Cline Road, Cooke Town, Bangalore, India

Correspondence Address:
Suryaprakash Ananthakrishna
Department of Conservative Dentistry and Endodontics, M. R. Ambedkar Dental College and Hospital, No 1/36, Cline Road, Cooke Town, Bangalore
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/2229-5194.100600

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Objective: Bioactive glass is a calcium sodium phosphosilicate material (24.5% CaO, 24.5% Na 2 O, 6.0% P 2 O 5 , and 45% SiO 2 ) that was originally developed as an implant material to regenerate bone and recently adapted for use in oral care products (NovaMin® , NovaMin Technology Inc.). NovaMin reacts rapidly with saliva to release sodium, which increases the salivary pH, as well as calcium and phosphate, creating the ideal conditions for tooth remineralization. NovaMin has been shown to occlude dentinal tubules and remineralize dentin; therefore, it could be used in the treatment of dentinal hypersensitivity. Thus, the aim of this study was to compare in vivo the effect of NovaMin and 10% strontium chloride containing dentifrices on dentinal hypersensitivity in a 6-week clinical study. Materials and Methods: Forty subjects were evaluated clinically for dentinal hypersensitivity using air blast method (dental air syringe) and cold water method, along with subjective perception of pain (0-10 scale) at baseline and at 2, 4, and 6 weeks. The subjects were then randomly divided into two groups and each group was treated with one of the two test dentifrices. Results: There was a general decrease in dentinal hypersensitivity levels in both the groups over 6 weeks, but there was a statistically greater difference in hypersensitivity at 2, 4, and 6 weeks in the group treated with DenShield (NovaMin containing dentifrice) when compared with the Senolin® (strontium chloride containing dentifrice) group. Clinical Relevance to Interdisciplinary Dentistry
  1. Dentin hypersensitivity is common problem experienced in clinical dental practice.
  2. It can occur due to changes in the crown, which involve removal of enamel as a result of attrition, abrasion, or erosion. Alternative causes of pain include chipped or fractured teeth, cracked cusps, carious lesions, leaky restorations, and developmental grooves.
  3. It can also occur due to exposure of root dentin as seen in gingival recession which is caused by chronic trauma from tooth brushing, acute and chronic inflammatory gingival and periodontal diseases, and acute trauma, as with periodontal surgery.
  4. The problem of dentin hypersensitivity is of concern to the general dental practitioner, the endodontist, and the periodontist, as the treatment requires a multidisciplinary approach very often. Correction could involve desensitizing dentifrices, restoration, crowns, and root coverage.

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