| 1. |
- Toia, Marco, et al.
(författare)
-
Clinical outcomes of implant- versus abutment-level connection in screw-retained fixed dental prostheses : A 5-year randomized controlled trial.
- 2024
-
Ingår i: Clinical Oral Implants Research. - : John Wiley & Sons. - 0905-7161 .- 1600-0501. ; 35:2, s. 230-241
-
Tidskriftsartikel (refereegranskat)abstract
- AIM: The aim of the study was to evaluate the 5 years clinical outcomes associated with implant-level connection (IL) versus abutment-level connection (AL) for implants with an internal conical connection (ICC) supporting a screw-retained fixed partial denture.MATERIALS AND METHODS: Fifty patients with 119 implants were randomly allocated to either the AL or IL group. Radiographic (Marginal bone loss) and clinical outcomes (Bleeding on Probing, probing pocket depth, plaque accumulation, incidence of peri-implantitis and peri-implant mucositis as well as prosthetic complications) were collected and compared at 1, 2, 3, and 5 years. A linear mixed model was used to evaluate the differences between groups.RESULTS: Five years after treatment, the MBL change was not significantly different between the groups at any point. The MBL was 0.23 ± 0.64 mm (AL) and 0.23 ± 0.29 mm (IL). The bleeding on Probing was 44% (AL) and 45% (IL) (p = .89). The mean probing depth was 2.91 ± 1.01 mm (AL) and 3.51 ± 0.67 mm (IL). This difference between the groups was statistically significant but clinical insignificant. Presence of plaque was slightly higher (p = .06) in the IL group (34.4%) compared with the AL group (26.3%). The overall technical, biological, and prosthetic complication rates were similar between groups. None of the implants developed peri-implantitis during the entire follow-up period.CONCLUSION: The results of this clinical trial indicated that all clinical and radiographical parameters were clinically comparable between the study groups.
|
|
| 2. |
- Fontanella, Chiara Giulia, et al.
(författare)
-
Interaction Phenomena between Dental Implants and Bone Tissue in Case of Misfit : A Pilot Study
- 2023
-
Ingår i: Applied Sciences. - : MDPI. - 2076-3417. ; 13:10
-
Tidskriftsartikel (refereegranskat)abstract
- The biomechanical response of cortical and trabecular bone tissues represents a fundamental aspect for the interpretation of the functional response of dental implants. In the case of misfit, the interaction phenomena occurring within the surgical and the subsequent healing phases must be interpreted primarily in the light of the response of bone tissue. This is influenced by the specific loadings induced, characterized by intensity and variable trends. The pilot study reported, which intentionally refers to a simple case of a two-implants frame, is addressed to define the method to approach the biomechanical investigation of the problem and to attest the necessity to integrate clinical competences with biomechanical analysis for interpreting different aspects of osseointegration. The action induced in cortical and trabecular bone regions depending on the implant frame conformation, the surgical procedure adopted, the varying condition at the bone-implant interface and the evolutionary trend of healing are the principal aspects to be considered to evaluate the osseointegration process. The biomechanical reliability of the specific implant frame is investigated in terms of bone-implant interaction by means of numerical models. This approach can offer valid information and support clinical practice under the fundamental condition that bone biomechanical behavior is properly characterized and represented in the model, in spite of the complex formulation to be adopted.
|
|
| 3. |
- Parpaiola, Andrea, et al.
(författare)
-
CAD/CAM Implant Abutments : Peri-implant Hard and Soft Tissue Response with Up to 4 Years of Follow-up-A Retrospective Cohort Study Evaluation
- 2020
-
Ingår i: The international journal of periodontics & restorative dentistry. - : Quintessence. - 0198-7569 .- 1945-3388. ; 40:2, s. 193-201
-
Tidskriftsartikel (refereegranskat)abstract
- This retrospective study evaluated hard and soft tissue response and reported mechanical and technical complications around computer-aided design/computer-assisted manufactured (CAD/CAM) abutments. A total of 123 patients restored with titanium, gold-hue titanium, and zirconia CAD/CAM abutments were included (N = 291). Each patient was followed up for at least 2 years. Clinical and radiographic parameters were assessed annually and complications were recorded. No implant or reconstruction failures were reported. One fracture of a zirconia abutment occurred. The prosthetic survival rate after 4 years of function for restorations and abutments was 100% and 99.66%, respectively. No significant differences in biologic and radiographic indices were found. The bleeding on probing index was positive at 42% of implant sites, and it had no significant correlation with the overall change in marginal bone level (0.02 mm) of bone gain. The short-term survival of CAD/CAM abutments was reliable, no matter of the material used for manufacturing.
|
|
| 4. |
- Parpaiola, Andrea, et al.
(författare)
-
Dimensions of the healthy gingiva and peri-implant mucosa.
- 2015
-
Ingår i: Clinical Oral Implants Research. - : John Wiley & Sons. - 0905-7161 .- 1600-0501. ; 26:6, s. 657-662
-
Tidskriftsartikel (refereegranskat)abstract
- Objective: To determine the dimensions of the soft tissue cuff present at various aspects of teeth and to compare these dimensions to those of the mucosa surrounding single implants. Material and methods: Fifty volunteers were recruited that were ≥25 years of age and exhibited no signs of (i) untreated caries; (ii) loss of periodontal tissue support in the incisor, canine, and premolar regions; (iii) systemic or local disease. Furthermore, among the 50 patients recruited (iV), 27 had one single implant in the maxilla with teeth present mesial and/or distal to the implant. Probing pocket depth (PPD) and transmucosal sounding depth (TS) were assessed by five experienced, carefully calibrated examiners and with the use of a periodontal probe at the proximal (mesial, distal) and flat (facial, buccal and palatal/lingual) surfaces of all teeth/implants. The width of the keratinized mucosa (KM) was also determined. Results: It was demonstrated that (i) PPD and TS were greater at proximal than at flat surfaces at both tooth and implant sites. In addition, both PPD and TS were deeper at implant than at tooth sites. The TS values documented that the cuff of healthy soft tissue that surrounded a tooth varied between 2 mm at flat surfaces and 4 mm at proximal surfaces, while at implant sites, the mucosa at proximal as well as flat surfaces was 1–1.5 mm greater. Conclusion: The probing pocket depth (PPD) and the transmucosal sounding depth (TS) values were greater at proximal than at flat, that is, facial/palatal (lingual) surfaces at tooth sites and frequently also at implant sites. Furthermore, the PPD and the TS dimensions were greater at implant than at adjacent tooth sites.
|
|
| 5. |
- Parpaiola, Andrea, et al.
(författare)
-
Virtual abutment design : a concept for delivery of CAD/CAM customized abutments-- report of a retrospective cohort
- 2013
-
Ingår i: The international journal of periodontics & restorative dentistry. - : Quintessence. - 0198-7569 .- 1945-3388. ; 33:1, s. 51-58
-
Tidskriftsartikel (refereegranskat)abstract
- This report presents early clinical experiences with the treatment of a consecutive cohort of 89 patients who received 125 prostheses supported by 205 milled abutments. Abutments were fabricated using unique computer-aided design software to deliver both titanium and zirconia abutments based on idealized values for tooth dimensions and emergence profiles as well as on a scan of the proposed definitive prosthesis.
|
|
