3D cone-beam C.T. imaging used to determine the effect of disinfection protocols on the dimensional stability of full arch impressions
| Autor: | Vineet Dhar, Mary Anne S. Melo, Louis G. DePaola, Isadora Martini Garcia, Abdulrahman A. Balhaddad, Kuei-Ling Hsu, Fabrício Mezzomo Collares |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Materials science
Wilcoxon signed-rank test Dental materials Contact time Disinfectant Computed tomography Infection control 030207 dermatology & venereal diseases 03 medical and health sciences 0302 clinical medicine Antimicrobial effect Irreversible hydrocolloid medicine General Dentistry Orthodontics medicine.diagnostic_test RK1-715 030206 dentistry Impression materials Impression Polyvinyl siloxane Dentistry Medicine Original Article |
| Zdroj: | Saudi Dental Journal, Vol 33, Iss 7, Pp 453-461 (2021) The Saudi Dental Journal |
| ISSN: | 1013-9052 |
| Popis: | Highlights • Cone-beam computed tomography assessed the dimensional stability of impressions. • The two common impression materials: alginate or polyvinylsiloxane were evaluated. • Five commercial disinfectant agents were tested on materials’ stability. • All disinfectant agents did not affect materials’ stability. Aim This study aimed to investigate the dimensional stability of irreversible hydrocolloid and polyvinylsiloxane (P.V.S.) impressions after exposure to four commercial disinfectants using cone-beam computed tomography (CBCT). Materials and Methods Two different impression materials were tested: irreversible hydrocolloid and P.V.S. Four disinfection solutions were applied: BirexSE, Opti-Cide3, COEfect MinuteSpray, and CaviCide Spray. Distilled water was used as a control group. Each solution remained in contact with the impression for 5 min. Additional contact time of 5 min compromises time for scanning. The materials were evaluated for dimensional stability after the impression of a maxillary complete edentulous template via CBCT before and after being in contact with the disinfectant agents. Measurements were assessed on the digital models from A-B, B-C, and C-A points. Paired analyses (Wilcoxon Signed Rank test or paired Student's t-test) were used to analyze each measurement before and after the contact with the disinfectant agents. The variance for each measurement was also analyzed via a one-way analysis of variance or Kruskal-Wallis. Results Overall, there were no statistical differences among the points measurements in the irreversible hydrocolloid or P.V.S. between initial and final assessments (p > 0.05). The used disinfectant agents in this study did not influence each measurement's variation on irreversible hydrocolloid or P.V.S. (p > 0.05). All agents showed an effect on the dimensional stability of both impression materials. The differences in the three dimensions ranged between 0.34 and 1.54%. Conclusion Within 10 min of removing the impression from the master cast, is study's findings indicated that the four commercially available disinfectants did not influence the dimensional stability of irreversible hydrocolloid or P.V.S. Further studies should be performed to elucidate the antimicrobial effect of these solutions applied as a spray on the surface of irreversible hydrocolloid and P.V.S. impressions. |
| Databáze: | OpenAIRE |
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