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Title: The assessment and treatment of cervical dentinal sensitivity
Author: Gillam, David Geoffrey
Awarding Body: University of Edinburgh
Current Institution: University of Edinburgh
Date of Award: 1993
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This thesis is concerned with cervical dentinal sensitivity (CDS), with particular reference to its aetiology and treatment, together with an evaluation of the range of methods used to assess the condition with respect to patient response to treatment by desensitizing agents. The original clinical study evaluated the comparative effectiveness of 2 strontium chloride hexahydrate (SCH) - containing dentifrices, similar except for their respective abrasive systems (silica-based and diatomaceous earth), in reducing cervical dentinal sensitivity (CDS). Both were equally effective, without any deleterious effect on plaque or gingivae. Following cessation of 8-weeks' controlled use of both dentifrices, only a slight reversal of sensitivity levels, as assessed by tactile (Yeaple probe), thermal (cold air-dental unit syringe) stimuli, together with patient subjective response (Visual Analogue Scale VAS), was observed at 20 weeks, although overall, sensitivity levels remained significantly lower than at baseline. All the above methods of assessing pain from CDS appeared satisfactory. On the basis of these findings a further portion of the investigation compared the various methods of evaluating patient subjective response (continuous 0-10 VAS, Numerical Rated Scale [NRS], Intensity [IVD] and Unpleasant [UVD] Word Descriptors) following application of the above test stimuli used in both the 8 and 20 weeks studies. Both verbal and non-verbal techniques were able to quantify the sensory and affective aspects of CDS pain. However, the choice of word descriptor is important and care should be taken to use words which correspond to the type of pain experienced. Sequence of stimulus application is also important. This study demonstrated that patients perceived cold air from a dental unit syringe to cause the greatest discomfort and tactile the least, which appears to substantiate the sequence of simulus application as used in the 8 and 20 week studies.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (D.D.S.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available