Effectiveness of two Desensitizer (Potassium Nitrate and Fluoride) in Relieving post-cementation tooth sensitivity.

Sachin S, Singh OK, Kumari S, Raj N, Hossain N and Prasad A

Published on: 1970-01-01

Abstract

Tooth hypersensitivity is characterized by non-specific or specific, intermittent or continuous transient and sharp pain which is originated from exposed detain as a response to external stimulations like chemical thermal dehydrating or tactile stimulations. Most of the patients reports hypersensitivity after preparation of vital teeth for the fixed prosthesis which is due to the connection between external environment and dental pulp causing movement of intratubular fluid and stimulation of pulpal nerve. The removal of enamel and reduction of detain thickness further results in increased detain permeability and pulp irritability.

Keywords

Tooth hypersensitivity; Pain; Desensitizer; Patient

Introduction

Tooth hypersensitivity is characterized by non-specific or specific [1], intermittent or continuous transient and sharp pain which is originated from exposed detain as a response to external stimulations like chemical thermal dehydrating or tactile stimulations [2]. Most of the patients reports hypersensitivity after preparation of vital teeth for the fixed prosthesis which is due to the connection between external environment and dental pulp causing movement of intratubular fluid and stimulation of pulpal nerve [3]. The removal of enamel and reduction of detain thickness further results in increased detain permeability and pulp irritability. It is evident that crown preparation increase the possibility of sensitivity as it causes exposure of approx. 1-2 mm dentin tubules [4, 5]. It has also been reported that 15% of prepared teeth for fixed prosthodontics become sensitive. Therapeutic desensitization methods for easing tooth hypersensitivity, usually done by scaling. Dentinal tubules with Ions, salts, dentin seal [6], protein deposition, nerve depolarization prevention by using substances such as potassium nitrate etc. Among these potassium nitrate doesn’t seal the tubules [7]. It increases the nerve stimulation threshold directly by raising extracellular K+ concentration and prevents the entrance of Na+ into the nerve and stop nerve repolarization [8]. Additionally it also causes vasodialation reduces neuropeptides such as calcium gene related peptide (CGRP) release in response to pulpal nerve stimulation [9-13].

Inclusion And Exclusion Criteria

A double blind paired parallel design.

Inclusion Criteria

  • Patient who at least had 3 vital teeth in need of fixed prosthesis.
  • The selected teeth should not be adjacent.
  • Male & Female aged 40-60 years except pregnant patient.
  • No sensitivity to substances used.

Exclusion Criteria

Subjective who did not participate in the follow up sessions and who consumed pain killers between and or before follow-up session.

Sensitivity Performance

Tooth hypersensitivity was determined through visual Analogue Scale (VAS) from 1 to 10 abutment teeth sensitivity was measured at five difficult points.

  • Baseline measured was done in 2 hours and Temporary crown cementation done.
  • 7 days after preparation just before permanent cementation and after permanent cementation.

 

Figure 1: Reduction of Sensitivity in all three groups.

Results

Tooth Sensitivity was reduced significantly in all 3 groups just before cementation compared to baseline (p<0.05) in addition [14], cementation resulted in reduction of sensitivity as shown in VAS. Result demonstrate that both agent’s potassium nitrate and fluoride varnish could decrease tooth sensitivity during fabrication of FPD and one week after permanent cementation [Figure 1].