European Journal of Prosthodontics and Restorative Dentistry

cover art

Cover Date:
March 2009
Print ISSN:
0965-7452
Vol:
17
Issue:
1

Chlorhexidine Gluconate Mouthwashes as a Surfactant for Addition-reaction Silicone Impressions

Abstract - Addition-reaction silicone impression (PVS) materials are hydrophobic. Hydrophobicity of the impression material may interfere with the wetting of the tooth, resulting in void formation. The study investigates whether conditioning teeth with Chlorhexidine-gluconate based mouthwashes can reduce the hydrophobicity and the number of voids on PVS impressions. Impression material contact angle specimens on bovine tooth surfaces were measured using a Reflex Microscope. PVS impressions (President) were made of untreated bovine teeth in three groups (1, 2 and 3) and fourth group used Impregum polyether impression material.: Group 1 was used as a control group, and original and mint flavoured Corsodyl (Chlorhexidine) mouthwashes were used as clinical surfactants in Groups 2 and 3, respectively. Contact angle readings were recorded on each side of every impression in each of the four groups and compared by an analysis of variance. In the second part of the study, the numbers of air voids on impression surfaces were visually recorded. The proportions of air voids in the groups were compared using a Chi-squared test. The mean angle for Group 3 with mint flavoured Corsodyl mouthwash was significantly smaller than that of any of the other groups (P< 0.05). The only statistically significant (P < 0.01) comparisons of the proportions of air voids were between Group 4 and each of the other experimental groups, with the percentage of voids being significantly greater in Group 4. Although Corsodyl mint significantly reduced the mean contact angle it did not significantly reduce the percentage of voids on impression surfaces.

KEY WORDS: Contact angle, Void, Impression, Chlorhexidine

Article Price
£15.00
Institution Article Price
£
Page Start
2
Page End
8
Authors
Mamaly Reshad, Michael Nesbit, Aviva Petrie, Derrick Setchell

Articles from this issue

  • Title
  • Pg. Start
  • Pg. End

  1. Chlorhexidine Gluconate Mouthwashes as a Surfactant for Addition-reaction Silicone Impressions
  2. 2
  3. 8

  1. Comparison of the Effect of Ovariectomy on Bone Mass in Dentate and Edentulous Mandibles of Adult Rats
  2. 9
  3. 21

  1. Resin-bonded Cast Splints for Loosened Abutment Teeth to Anchor a Removable Partial Denture: A Case Report
  2. 22
  3. 25

  1. Computerised Dental Implant Rehabilitation Planning and Execution Following Mandibular Resection: A Case Report
  2. 26
  3. 29

  1. A Novel Instrument to Determine Pulp Proximity
  2. 30
  3. 34

  1. The Prevalence of Temporomandibular Disorders Among Two Different Denture-wearing Populations
  2. 35
  3. 40

  1. Investigation of the Effect of a Proprietary Dental Waterline Disinfectant on Shear Bond Strengths of Panavia 21 to Enamel and Dentine
  2. 41
  3. 46

  1. Book Reviews
  2. 47
  3. 47