Influence of application site of provisional cement on the marginal adaptation of provisional crowns
INTRODUCTION: Marginal discrepancies may lead to cement washout and marginal leakage, damaging periodontal and pulp tissues or causing premature loss of the restoration. PURPOSE: This study evaluated the influence of application site of provisional cement on the marginal adaptation of provisional cr...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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University of São Paulo
2008-06-01
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| Series: | Journal of Applied Oral Science |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-77572008000300010 |
| _version_ | 1819262666579902464 |
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| author | Mayra Cardoso Marcelo Ferreira Torres Mariana Ribeiro de Moraes Rego Luiz Carlos Santiago |
| author_facet | Mayra Cardoso Marcelo Ferreira Torres Mariana Ribeiro de Moraes Rego Luiz Carlos Santiago |
| author_sort | Mayra Cardoso |
| collection | DOAJ |
| description | INTRODUCTION: Marginal discrepancies may lead to cement washout and marginal leakage, damaging periodontal and pulp tissues or causing premature loss of the restoration. PURPOSE: This study evaluated the influence of application site of provisional cement on the marginal adaptation of provisional crowns. MATERIAL AND METHODS: Four different application sites of provisional cement (Temp Bond NE, Kerr Corporation) were used for cementation of provisional crowns on phantom teeth prepared for full crown restorations, performing 4 experimental groups (n=10): cement applied to all internal surfaces of the crown (CAO); cement applied to all internal surfaces of the crown, except for the occlusal surface (CA); cement applied to the cervical crown margin (CM); and cement applied to the cervical tooth margin (TM). A comparison microscope (Mitutoyo America Corporation) was used to measure the distances between the internal tangents of two circular marks, one made on the provisional crown and one made apical to the tooth preparation margin, in areas corresponding to buccal, lingual, mesial and distal surfaces. Marginal adaptation was determined before and after cementation, with 0.0001-mm accuracy. Data were analyzed statistically by ANOVA and Tukey's test at 5% significance level. RESULTS: Mean values of marginal opening obtained for each group were: CAO: 145 µm; CA: 67 µm; CM: 46 µm; TM: 34 µm. CA, CM and TM presented significantly lower marginal openings than CAO (p<0.05). CONCLUSION: complete filling of the crown with provisional cement, including the occlusal surface, provided grater marginal discrepancies when compared to the other methods evaluated. |
| first_indexed | 2024-12-23T20:01:19Z |
| format | Article |
| id | doaj.art-727953cc86ca4ca8b67e578e51ca1771 |
| institution | Directory Open Access Journal |
| issn | 1678-7757 1678-7765 |
| language | English |
| last_indexed | 2024-12-23T20:01:19Z |
| publishDate | 2008-06-01 |
| publisher | University of São Paulo |
| record_format | Article |
| series | Journal of Applied Oral Science |
| spelling | doaj.art-727953cc86ca4ca8b67e578e51ca17712022-12-21T17:33:05ZengUniversity of São PauloJournal of Applied Oral Science1678-77571678-77652008-06-0116321421810.1590/S1678-77572008000300010Influence of application site of provisional cement on the marginal adaptation of provisional crownsMayra CardosoMarcelo Ferreira TorresMariana Ribeiro de Moraes RegoLuiz Carlos SantiagoINTRODUCTION: Marginal discrepancies may lead to cement washout and marginal leakage, damaging periodontal and pulp tissues or causing premature loss of the restoration. PURPOSE: This study evaluated the influence of application site of provisional cement on the marginal adaptation of provisional crowns. MATERIAL AND METHODS: Four different application sites of provisional cement (Temp Bond NE, Kerr Corporation) were used for cementation of provisional crowns on phantom teeth prepared for full crown restorations, performing 4 experimental groups (n=10): cement applied to all internal surfaces of the crown (CAO); cement applied to all internal surfaces of the crown, except for the occlusal surface (CA); cement applied to the cervical crown margin (CM); and cement applied to the cervical tooth margin (TM). A comparison microscope (Mitutoyo America Corporation) was used to measure the distances between the internal tangents of two circular marks, one made on the provisional crown and one made apical to the tooth preparation margin, in areas corresponding to buccal, lingual, mesial and distal surfaces. Marginal adaptation was determined before and after cementation, with 0.0001-mm accuracy. Data were analyzed statistically by ANOVA and Tukey's test at 5% significance level. RESULTS: Mean values of marginal opening obtained for each group were: CAO: 145 µm; CA: 67 µm; CM: 46 µm; TM: 34 µm. CA, CM and TM presented significantly lower marginal openings than CAO (p<0.05). CONCLUSION: complete filling of the crown with provisional cement, including the occlusal surface, provided grater marginal discrepancies when compared to the other methods evaluated.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-77572008000300010Marginal openingProvisional crownsProvisional cement |
| spellingShingle | Mayra Cardoso Marcelo Ferreira Torres Mariana Ribeiro de Moraes Rego Luiz Carlos Santiago Influence of application site of provisional cement on the marginal adaptation of provisional crowns Journal of Applied Oral Science Marginal opening Provisional crowns Provisional cement |
| title | Influence of application site of provisional cement on the marginal adaptation of provisional crowns |
| title_full | Influence of application site of provisional cement on the marginal adaptation of provisional crowns |
| title_fullStr | Influence of application site of provisional cement on the marginal adaptation of provisional crowns |
| title_full_unstemmed | Influence of application site of provisional cement on the marginal adaptation of provisional crowns |
| title_short | Influence of application site of provisional cement on the marginal adaptation of provisional crowns |
| title_sort | influence of application site of provisional cement on the marginal adaptation of provisional crowns |
| topic | Marginal opening Provisional crowns Provisional cement |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-77572008000300010 |
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