Evaluation of concordance between CAD/CAM and clinical positions of abutment shoulder against mucosal margin: an observational study
Abstract Background While working on CAD/CAM-customized abutments, the use of standard impression copings with a circular diameter produces inconsistency within the emergence profile. It may begin with a collapse of the supra-implant mucosa during impression taking, then lead to a computer-generated...
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| Format: | Article |
| Language: | English |
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BMC
2018-05-01
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| Series: | BMC Oral Health |
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| Online Access: | http://link.springer.com/article/10.1186/s12903-018-0534-2 |
| _version_ | 1819242270284578816 |
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| author | Jan K. Pietruski Anna Skurska Anna Bernaczyk Robert Milewski Maria Julia Pietruska Peter Gehrke Małgorzata D. Pietruska |
| author_facet | Jan K. Pietruski Anna Skurska Anna Bernaczyk Robert Milewski Maria Julia Pietruska Peter Gehrke Małgorzata D. Pietruska |
| author_sort | Jan K. Pietruski |
| collection | DOAJ |
| description | Abstract Background While working on CAD/CAM-customized abutments, the use of standard impression copings with a circular diameter produces inconsistency within the emergence profile. It may begin with a collapse of the supra-implant mucosa during impression taking, then lead to a computer-generated mismatch of the position and outline of the abutment shoulder, and consequently result in a compromised outcome of anticipated treatment. The aim of the study was to compare the virtual and clinical positions of the abutment shoulder in relation to the mucosal margin after the abutment delivery. Methods Conventional open-tray impression takings followed uncovering surgery. Master casts were scanned with a desktop scanner. Clinical examinations took place after abutment’s insertion and temporization (T1) and prior to cementation of the definitive crown (T2). The distances between the abutment shoulder and marginal soft tissue were measured intraorally in four aspects and juxtaposed with those on the virtual model. Results The study evaluated 257 dental implants and CAD/CAM-customized abutments. As T1 and T2 showed, there was a positive correlation between the virtually designed abutment shoulder position and matching clinical location relative to the mucosal margin. In 42.1% of cases, the distance between the mucosal margin and the abutment shoulder did not change. It increased in 36.3% of cases while a decrease occurred in 21.6% of them. Conclusions Computer-set position of the abutment shoulder in relation to the mucosal margin can be predictably implemented in clinical practice. |
| first_indexed | 2024-12-23T14:37:08Z |
| format | Article |
| id | doaj.art-4448ea8252134e0b871d78b961e67933 |
| institution | Directory Open Access Journal |
| issn | 1472-6831 |
| language | English |
| last_indexed | 2024-12-23T14:37:08Z |
| publishDate | 2018-05-01 |
| publisher | BMC |
| record_format | Article |
| series | BMC Oral Health |
| spelling | doaj.art-4448ea8252134e0b871d78b961e679332022-12-21T17:43:19ZengBMCBMC Oral Health1472-68312018-05-011811610.1186/s12903-018-0534-2Evaluation of concordance between CAD/CAM and clinical positions of abutment shoulder against mucosal margin: an observational studyJan K. Pietruski0Anna Skurska1Anna Bernaczyk2Robert Milewski3Maria Julia Pietruska4Peter Gehrke5Małgorzata D. Pietruska6Private Dental PracticeDepartment of Periodontal and Oral Mucosa Diseases, Medical University of BiałystokPrivate Dental PracticeDepartment of Statistics and Medical Informatics, Medical University of BiałystokDepartment of Periodontal and Oral Mucosa Diseases, Medical University of BiałystokPrivate PracticePrivate Dental PracticeAbstract Background While working on CAD/CAM-customized abutments, the use of standard impression copings with a circular diameter produces inconsistency within the emergence profile. It may begin with a collapse of the supra-implant mucosa during impression taking, then lead to a computer-generated mismatch of the position and outline of the abutment shoulder, and consequently result in a compromised outcome of anticipated treatment. The aim of the study was to compare the virtual and clinical positions of the abutment shoulder in relation to the mucosal margin after the abutment delivery. Methods Conventional open-tray impression takings followed uncovering surgery. Master casts were scanned with a desktop scanner. Clinical examinations took place after abutment’s insertion and temporization (T1) and prior to cementation of the definitive crown (T2). The distances between the abutment shoulder and marginal soft tissue were measured intraorally in four aspects and juxtaposed with those on the virtual model. Results The study evaluated 257 dental implants and CAD/CAM-customized abutments. As T1 and T2 showed, there was a positive correlation between the virtually designed abutment shoulder position and matching clinical location relative to the mucosal margin. In 42.1% of cases, the distance between the mucosal margin and the abutment shoulder did not change. It increased in 36.3% of cases while a decrease occurred in 21.6% of them. Conclusions Computer-set position of the abutment shoulder in relation to the mucosal margin can be predictably implemented in clinical practice.http://link.springer.com/article/10.1186/s12903-018-0534-2Customized abutmentAbutment shoulderSoft tissueMucosal marginCAD/CAM technology |
| spellingShingle | Jan K. Pietruski Anna Skurska Anna Bernaczyk Robert Milewski Maria Julia Pietruska Peter Gehrke Małgorzata D. Pietruska Evaluation of concordance between CAD/CAM and clinical positions of abutment shoulder against mucosal margin: an observational study BMC Oral Health Customized abutment Abutment shoulder Soft tissue Mucosal margin CAD/CAM technology |
| title | Evaluation of concordance between CAD/CAM and clinical positions of abutment shoulder against mucosal margin: an observational study |
| title_full | Evaluation of concordance between CAD/CAM and clinical positions of abutment shoulder against mucosal margin: an observational study |
| title_fullStr | Evaluation of concordance between CAD/CAM and clinical positions of abutment shoulder against mucosal margin: an observational study |
| title_full_unstemmed | Evaluation of concordance between CAD/CAM and clinical positions of abutment shoulder against mucosal margin: an observational study |
| title_short | Evaluation of concordance between CAD/CAM and clinical positions of abutment shoulder against mucosal margin: an observational study |
| title_sort | evaluation of concordance between cad cam and clinical positions of abutment shoulder against mucosal margin an observational study |
| topic | Customized abutment Abutment shoulder Soft tissue Mucosal margin CAD/CAM technology |
| url | http://link.springer.com/article/10.1186/s12903-018-0534-2 |
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