Selected characteristics of a new polyvinyl siloxane impression material - A randomized clinical trial

Markus B. Blatz, Avishai Sadan, John O. Burgess, Donald Mercante, Stefan Holst

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

Objectives: This study evaluated the ability of a new polyvinyl siloxane impression material (Affinis, Coltène/Whaledent, material A) to obtain final impressions free of bubbles and voids for indirect fixed cuspal-coverage restorations. The results were compared to a control polyvinyl siloxane impression material (material B). Both materials were handled by inexperienced clinicians (undergraduate dental students) in student clinics. Method and Materials: One-hundred and thirty patients who were treated in the Louisiana State University School of Dentistry Junior Student Clinic for indirect fixed cuspal-coverage restorations and who met the inclusion criteria were randomly assigned to either one of two treatment groups, group A (n = 65) or group B (n = 65). Two calibrated examiners evaluated the first impression of prepared posterior teeth at a magnification of 10X for acceptability (no voids or bubbles). Position of tooth, type of preparation, preparation finish line (Class I-V), and gingival bleeding scores were recorded. All statistical tests were performed with the level of significance set at .05. Results: The Fisher-Freeman-Halton test did not reveal significant associations between material and gingival bleeding score (P = .492). Significant differences in the location of the preparation finish line between materials were observed (P = .0096); material A was more frequently used in cases where the preparation finish line was located at least 2 mm subgingivally. Logistic regression was used to assess the effect of the material on the success of the impression (acceptable/unacceptable). Material was highly significant in the logistic model (P < .001) with an odds in favor of an acceptable impression being eight times higher with material A than with material B (odds ratio = 8.00; 95% confidence index for odds ratio: 2.832, 22.601). The 60/65 (92.3%) impressions made with material A and 39/65 (60%) impressions made with material B were rated "acceptable." Conclusion: The new polyvinyl siloxane impression material provided a significantly higher proportion of impressions free of bubbles and voids than the control polyvinyl siloxane material.

Original languageEnglish (US)
Pages (from-to)97-104
Number of pages8
JournalQuintessence International
Volume36
Issue number2
StatePublished - Feb 1 2005

Fingerprint

Randomized Controlled Trials
Logistic Models
Odds Ratio
Tooth Preparation
School Dentistry
Hemorrhage
Students
Dental Students
Tooth
vinyl polysiloxane
Therapeutics

Keywords

  • Accuracy
  • Final impression
  • Fixed restoration
  • Impression material
  • Randomized clinical trial

ASJC Scopus subject areas

  • Dentistry(all)

Cite this

Blatz, M. B., Sadan, A., Burgess, J. O., Mercante, D., & Holst, S. (2005). Selected characteristics of a new polyvinyl siloxane impression material - A randomized clinical trial. Quintessence International, 36(2), 97-104.

Selected characteristics of a new polyvinyl siloxane impression material - A randomized clinical trial. / Blatz, Markus B.; Sadan, Avishai; Burgess, John O.; Mercante, Donald; Holst, Stefan.

In: Quintessence International, Vol. 36, No. 2, 01.02.2005, p. 97-104.

Research output: Contribution to journalArticle

Blatz, MB, Sadan, A, Burgess, JO, Mercante, D & Holst, S 2005, 'Selected characteristics of a new polyvinyl siloxane impression material - A randomized clinical trial', Quintessence International, vol. 36, no. 2, pp. 97-104.
Blatz, Markus B. ; Sadan, Avishai ; Burgess, John O. ; Mercante, Donald ; Holst, Stefan. / Selected characteristics of a new polyvinyl siloxane impression material - A randomized clinical trial. In: Quintessence International. 2005 ; Vol. 36, No. 2. pp. 97-104.
@article{0a2034023b5843d187acd9a590547333,
title = "Selected characteristics of a new polyvinyl siloxane impression material - A randomized clinical trial",
abstract = "Objectives: This study evaluated the ability of a new polyvinyl siloxane impression material (Affinis, Colt{\`e}ne/Whaledent, material A) to obtain final impressions free of bubbles and voids for indirect fixed cuspal-coverage restorations. The results were compared to a control polyvinyl siloxane impression material (material B). Both materials were handled by inexperienced clinicians (undergraduate dental students) in student clinics. Method and Materials: One-hundred and thirty patients who were treated in the Louisiana State University School of Dentistry Junior Student Clinic for indirect fixed cuspal-coverage restorations and who met the inclusion criteria were randomly assigned to either one of two treatment groups, group A (n = 65) or group B (n = 65). Two calibrated examiners evaluated the first impression of prepared posterior teeth at a magnification of 10X for acceptability (no voids or bubbles). Position of tooth, type of preparation, preparation finish line (Class I-V), and gingival bleeding scores were recorded. All statistical tests were performed with the level of significance set at .05. Results: The Fisher-Freeman-Halton test did not reveal significant associations between material and gingival bleeding score (P = .492). Significant differences in the location of the preparation finish line between materials were observed (P = .0096); material A was more frequently used in cases where the preparation finish line was located at least 2 mm subgingivally. Logistic regression was used to assess the effect of the material on the success of the impression (acceptable/unacceptable). Material was highly significant in the logistic model (P < .001) with an odds in favor of an acceptable impression being eight times higher with material A than with material B (odds ratio = 8.00; 95{\%} confidence index for odds ratio: 2.832, 22.601). The 60/65 (92.3{\%}) impressions made with material A and 39/65 (60{\%}) impressions made with material B were rated {"}acceptable.{"} Conclusion: The new polyvinyl siloxane impression material provided a significantly higher proportion of impressions free of bubbles and voids than the control polyvinyl siloxane material.",
keywords = "Accuracy, Final impression, Fixed restoration, Impression material, Randomized clinical trial",
author = "Blatz, {Markus B.} and Avishai Sadan and Burgess, {John O.} and Donald Mercante and Stefan Holst",
year = "2005",
month = "2",
day = "1",
language = "English (US)",
volume = "36",
pages = "97--104",
journal = "Quintessence international (Berlin, Germany : 1985)",
issn = "0033-6572",
publisher = "Quintessence Publishing Company",
number = "2",

}

TY - JOUR

T1 - Selected characteristics of a new polyvinyl siloxane impression material - A randomized clinical trial

AU - Blatz, Markus B.

AU - Sadan, Avishai

AU - Burgess, John O.

AU - Mercante, Donald

AU - Holst, Stefan

PY - 2005/2/1

Y1 - 2005/2/1

N2 - Objectives: This study evaluated the ability of a new polyvinyl siloxane impression material (Affinis, Coltène/Whaledent, material A) to obtain final impressions free of bubbles and voids for indirect fixed cuspal-coverage restorations. The results were compared to a control polyvinyl siloxane impression material (material B). Both materials were handled by inexperienced clinicians (undergraduate dental students) in student clinics. Method and Materials: One-hundred and thirty patients who were treated in the Louisiana State University School of Dentistry Junior Student Clinic for indirect fixed cuspal-coverage restorations and who met the inclusion criteria were randomly assigned to either one of two treatment groups, group A (n = 65) or group B (n = 65). Two calibrated examiners evaluated the first impression of prepared posterior teeth at a magnification of 10X for acceptability (no voids or bubbles). Position of tooth, type of preparation, preparation finish line (Class I-V), and gingival bleeding scores were recorded. All statistical tests were performed with the level of significance set at .05. Results: The Fisher-Freeman-Halton test did not reveal significant associations between material and gingival bleeding score (P = .492). Significant differences in the location of the preparation finish line between materials were observed (P = .0096); material A was more frequently used in cases where the preparation finish line was located at least 2 mm subgingivally. Logistic regression was used to assess the effect of the material on the success of the impression (acceptable/unacceptable). Material was highly significant in the logistic model (P < .001) with an odds in favor of an acceptable impression being eight times higher with material A than with material B (odds ratio = 8.00; 95% confidence index for odds ratio: 2.832, 22.601). The 60/65 (92.3%) impressions made with material A and 39/65 (60%) impressions made with material B were rated "acceptable." Conclusion: The new polyvinyl siloxane impression material provided a significantly higher proportion of impressions free of bubbles and voids than the control polyvinyl siloxane material.

AB - Objectives: This study evaluated the ability of a new polyvinyl siloxane impression material (Affinis, Coltène/Whaledent, material A) to obtain final impressions free of bubbles and voids for indirect fixed cuspal-coverage restorations. The results were compared to a control polyvinyl siloxane impression material (material B). Both materials were handled by inexperienced clinicians (undergraduate dental students) in student clinics. Method and Materials: One-hundred and thirty patients who were treated in the Louisiana State University School of Dentistry Junior Student Clinic for indirect fixed cuspal-coverage restorations and who met the inclusion criteria were randomly assigned to either one of two treatment groups, group A (n = 65) or group B (n = 65). Two calibrated examiners evaluated the first impression of prepared posterior teeth at a magnification of 10X for acceptability (no voids or bubbles). Position of tooth, type of preparation, preparation finish line (Class I-V), and gingival bleeding scores were recorded. All statistical tests were performed with the level of significance set at .05. Results: The Fisher-Freeman-Halton test did not reveal significant associations between material and gingival bleeding score (P = .492). Significant differences in the location of the preparation finish line between materials were observed (P = .0096); material A was more frequently used in cases where the preparation finish line was located at least 2 mm subgingivally. Logistic regression was used to assess the effect of the material on the success of the impression (acceptable/unacceptable). Material was highly significant in the logistic model (P < .001) with an odds in favor of an acceptable impression being eight times higher with material A than with material B (odds ratio = 8.00; 95% confidence index for odds ratio: 2.832, 22.601). The 60/65 (92.3%) impressions made with material A and 39/65 (60%) impressions made with material B were rated "acceptable." Conclusion: The new polyvinyl siloxane impression material provided a significantly higher proportion of impressions free of bubbles and voids than the control polyvinyl siloxane material.

KW - Accuracy

KW - Final impression

KW - Fixed restoration

KW - Impression material

KW - Randomized clinical trial

UR - http://www.scopus.com/inward/record.url?scp=12444310143&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=12444310143&partnerID=8YFLogxK

M3 - Article

C2 - 15732545

AN - SCOPUS:12444310143

VL - 36

SP - 97

EP - 104

JO - Quintessence international (Berlin, Germany : 1985)

JF - Quintessence international (Berlin, Germany : 1985)

SN - 0033-6572

IS - 2

ER -