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Different studies have proposed the use of zirconia abutments to improve the aesthetic outcomes in the anterior sextant, however the results have been inconclusive. A tendency towards a better aesthetic result with the use of zirconia instead of titanium abutments was observed, although more technical complications were also recorded.The use of zirconia abutments in the anterior maxillary region showed a tendency towards better matching, although differences were not significant. In addition, with these abutments more technical complications were observed, what increased the cost and time. More studies with larger samples and longer observations periods are needed to recommend the use of zirconia abutments for this clinical situation
The purpose of the present study was to evaluate the clinical and aesthetic outcomes of single tooth implant restorations, where different abutment materials were used (zirconia vs titanium) associated with metal-ceramic crowns. The evaluation was carried out by means of an aesthetic composite index combined with patient evaluation
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| SPI®ART | Experimental | in test group after a three month healing period a zirconia abutment was connected to the implant to realize the prosthetic restoration |
|
| SPI®EASY | Active Comparator | in control group a three month healing period a titanium abutment was connected to the implant for the prosthetic restoration |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| SPI®ART | Device | implant prothetic restoration using a yttrium oxide stabilized zirconia abutment |
|
| Measure | Description | Time Frame |
|---|---|---|
| change from baseline in the anatomic form and surface characteristics of the peri implant mucosa | the following parameters were assessed by means of standardized photographs: contour of the labial surface of the mucosa and its colour; when compared to the adjacent teeth , penalty points were assigned ( 0 = excellent; 1 or 2 = satisfactory; 3 or 4 = moderate; 5 ore more, poor). | one month and one year after the placement of the definitive crowns |
| Measure | Description | Time Frame |
|---|---|---|
| change from baseline in crestal bone levels | in standardized intraoral radiographs the the following measurements were carried out : vertical distance from implant shoulder to the most coronal bone in contact with the implant at mesial and distal site; horizontal distance from the implant shoulder to the adjacent teeth at mesial and distal sites; vertical distance ( parallel to the implant long axis) from the contact point to the bone crest at mesial and distal sides |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| nicola baldini, oral surgeon | tuscal school of dental medicine | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Siena University, Department of Periodontology, Policlinico Le Scotte Siena. | Siena | Siena | 53100 | Italy | ||
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 16307570 | Background | Meijer HJ, Stellingsma K, Meijndert L, Raghoebar GM. A new index for rating aesthetics of implant-supported single crowns and adjacent soft tissues--the Implant Crown Aesthetic Index. Clin Oral Implants Res. 2005 Dec;16(6):645-9. doi: 10.1111/j.1600-0501.2005.01128.x. | |
| 36748305 | Derived | Ferrantino L, Carrillo de Albornoz A, Sanz M. Five-year outcomes of a randomized controlled clinical trial comparing single-tooth implant-supported restoration with either zirconia or titanium abutments. J Clin Periodontol. 2023 Jun;50(6):744-754. doi: 10.1111/jcpe.13787. Epub 2023 Feb 28. |
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| SPI®EASY | Device | implant prosthetic restoration using a commercially pure titanium grade 4 abutment |
|
| one month and one year after placing the definitive crown |
| change from baseline in interdental soft tissue position | position of interdental papilla measured by means of Papilla Index ( Jemt, 1997) | one month and one year after the placement of the definitive crowns |
| change from baseline in thickness of the peri implant mucosa | the thickness was measured by placing a calibrated endodontic file 2mm apical to the mucosal margin | one month and one year after the placement of the definitive crowns |
| Tuscan School of Dentistry |
| Siena |
| Siena |
| 53100 |
| Italy |