1
|
Back LS, Silva J, Morsch CS, Tumedei M, Magini RDS, Piatelli A, Benfatti CAM. Clinical Performance of 170 Frictional Morse Taper Implants: 2 Years Follow-Up. J ORAL IMPLANTOL 2024; 50:127-135. [PMID: 38530824 DOI: 10.1563/aaid-joi-d-23-00054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/28/2024]
Abstract
This study evaluated the clinical survival rates of 170 Morse taper implants through clinical and mechanical parameters in different therapeutic approaches such as single crowns, fixed partial prostheses, and fixed full-arch prostheses. Patients referred to the Center on Education and Research on Dental Implants from May 2017 to July 2018 with the indication for dental implant therapy, aged >18 years, without periodontal disease, recent evidence of inflammatory activity or other oral disorders, current pregnancy, uncontrolled diabetes mellitus or heavy smoking habit were included in this study. After 12 weeks of healing since the implants were placed in the mandible and after 16 weeks following implants placed in the maxilla, patients returned to the Center for prosthetic rehabilitation. After implant therapy, all patients underwent periodical, clinical, and prosthetic examinations every 6 months. Prosthetic restorations involved 109 fixed reconstructions in function. Few prosthetic complications were reported (6.55%). Twenty implants were rehabilitated with cemented prostheses; from those, 1 crown suffered a loss in retention/decementation. Of the 148 implants rehabilitated with screwed-retained prostheses, 6.76% suffered prosthetic screw loosening. The cumulative implant survival rate was 98.2%. When peri-implant tissue health was evaluated, the keratinized mucosa band appeared related to peri-implant tissue stability. Thus, Morse taper implants represented a successful procedure for implant rehabilitation, with a high cumulative implant survival rate, low prevalence of biological and prosthetic complications, and good stability of peri-implant tissues over the assessed period.
Collapse
Affiliation(s)
- Lara Steiner Back
- Department of Dentistry, Center for Education and Research on Dental Implants (CEPID), Federal University of Santa Catarina (UFSC), Florianópolis, Brazil
| | - Joseane Silva
- Department of Dentistry, Center for Education and Research on Dental Implants (CEPID), Federal University of Santa Catarina (UFSC), Florianópolis, Brazil
| | - Carolina Schäffer Morsch
- Department of Dentistry, Center for Education and Research on Dental Implants (CEPID), Federal University of Santa Catarina (UFSC), Florianópolis, Brazil
| | - Margherita Tumedei
- Department of Biomedical, Surgical and Dental Sciences, State University of Milano, Milano, Italy and IRCCS, Fondazione Ca' Granda, IRCCS Ospedale Maggiore Policlinico, Milano, Italy
| | - Ricardo de Souza Magini
- Department of Dentistry, Center for Education and Research on Dental Implants (CEPID), Federal University of Santa Catarina (UFSC), Florianópolis, Brazil
| | - Adriano Piatelli
- School of Dentistry, Saint Camillus International University for Health Sciences (Unicamillus), Rome, Italy and Facultad de Medicina, Universidad Catolica San Antonio de Murcia, Murcia Spain
| | - Cesar Augusto Magalhães Benfatti
- Department of Dentistry, Center for Education and Research on Dental Implants (CEPID), Federal University of Santa Catarina (UFSC), Florianópolis, Brazil
| |
Collapse
|
2
|
P M G, Sukumaran K, K H, Ravindran S. Evaluation of the Stability of Open-Tray Impression Coping Using Two Different Impression Materials at Three Different Subgingival Implant Placement Depths. Cureus 2024; 16:e61117. [PMID: 38803409 PMCID: PMC11129605 DOI: 10.7759/cureus.61117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/25/2024] [Indexed: 05/29/2024] Open
Abstract
Objective To evaluate and compare the stability of the open tray impression coping within the set impression while attaching the lab analog when polyether (PE) heavy body and polyvinyl siloxane (PVS) putty impression materials were used and the implant platform was placed sub-gingivally at three different depths. Methods Two impression materials, PE and PVS, and custom-made plexiglass models with embedded single implants to simulate implant positioning depths of 0 mm, 2 mm, and 4 mm, sub-gingivally, were used in the study. Open tray impressions were made after attaching impression coping to the implant embedded in the model. Implant lab analog was attached to the impression coping in the set impression, and its stability was measured using a universal testing machine. Forty-two open tray impressions were made in six groups, with seven impressions in each group. Descriptive statistics such as mean and standard deviation were calculated. A comparison of the mean stability between the two impression materials at each depth was done using an independent t-test. Comparison of the mean stability between the three different subgingival implant depths in each material was done by one-way ANOVA with the Scheffe multiple comparison test (post-hoc analysis). The level of significance was set at p<0.05. Results The stability of the impression coping was measured as the force in Newtons required for the displacement of the analog attached to the impression coping embedded in the set impression. PE with the embedded impression coping at a depth of 0 mm gave the highest mean stability value (4.37+/-0.41), and the least mean stability was offered by PVS with the embedded impression coping at 4 mm depth (1.88+/-0.37). When an independent t-test was done to compare the mean stability values of PE and PVS, there was a statistically significant difference at 0 mm, 2 mm, and 4 mm. On doing one-way ANOVA to compare the mean stability between the different depth groups, there was a statistically significant difference between the three depth groups in PE and PVS. Scheffe multiple comparison tests (post-hoc analysis) revealed a statistically significant difference between 0 mm, 2 mm, and 4 mm subgingival depths of the impression coping placement in both PE and PVS. Conclusion The accuracy of the master cast is an important determinant for the precise fit and long life of the final prosthesis. In the case of maxillary anterior implant placements where deep subgingival placement of the implant platform is needed for aesthetic and functional reasons, the impression material should be selected carefully to ensure the stability of the impression coping. Among the materials included in the present study, the PE impression material offered the maximum stability for impression coping compared to PVS.
Collapse
Affiliation(s)
- Gayathri P M
- Prosthodontics, Government Dental College, Thiruvananthapuram, Thiruvananthapuram, IND
| | - Kala Sukumaran
- Prosthodontics, Government Dental College, Thiruvananthapuram, Thiruvananthapuram, IND
| | - Harshakumar K
- Prosthodontics, Government Dental College, Thiruvananthapuram, Thiruvananthapuram, IND
| | - Smitha Ravindran
- Prosthodontics, Government Dental College, Thiruvananthapuram, Thiruvananthapuram, IND
| |
Collapse
|
3
|
Ibrahim AM, Elgamal M, Ragheb NA. One-time definitive attachment connection versus healing abutment placement for an implant-retained mandibular overdenture: Peri-implant metabolic activity. J Prosthet Dent 2024:S0022-3913(24)00192-6. [PMID: 38600003 DOI: 10.1016/j.prosdent.2024.03.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Revised: 02/29/2024] [Accepted: 03/05/2024] [Indexed: 04/12/2024]
Abstract
STATEMENT OF PROBLEM Unscrewing the healing abutment can affect the soft tissue integration and apical migration of the biological width, which may compromise the integrity of peri-implant soft tissue. PURPOSE The purpose of this clinical study was to determine the level of glycosaminoglycan (GAG) detected in the peri-implant crevicular fluid (PICF) between the test group (1-time abutment) and control group (healing abutment) for implant-retained mandibular overdentures. MATERIAL AND METHODS Two dental implants were installed in the canine regions of the mandibular ridge of 18 healthy completely edentulous participants using 2-stage surgery and a delayed loading protocol. At the second stage surgery, the implant on the right side was exposed, and a healing abutment was screwed onto the implant (control group), while on the left side the definitive ball abutment was screwed onto the implant (test group). After 10 days, the healing abutment in the control group was unscrewed and replaced with the definitive ball abutment. For both groups, the ball attachment was directly picked up to incorporate the attachment house to the mandibular denture. PICF samples were collected from the participants at 7 days, 3 months, and 6 months after overdenture use. Statistical analysis was done with an independent samples t test (α=.05). RESULTS A significant difference was found in the volume of PICF and the level of GAG between the test and control groups at the 7-day evaluation period (P=.008, P=.002, respectively), while the volumes of PICF and the levels of GAG were not significantly different (P>.05) at the other evaluation periods. CONCLUSIONS The 1-time abutment protocol offers biochemical and economic advantages compared with the conventional method of using the healing abutment before placement of the definitive attachment for an implant-retained overdenture with single attachments.
Collapse
Affiliation(s)
- Abdallah Mohammed Ibrahim
- Associate Professor, Department of Removable Prosthodontics, Faculty of Dentistry, Mansoura University, Eldakahlia, Egypt.
| | - Mohamed Elgamal
- Associate Professor, Department of Removable Prosthodontics, Faculty of Dentistry, Mansoura University, Eldakahlia, Egypt; and Associate Professor, Department of Removable Prosthodontics, Faculty of Dentistry, Horus University, Damietta, Egypt
| | - Nourhan Ahmed Ragheb
- Associate Professor, Department of Prosthodontics, Faculty of Dentistry, Kafrelsheikh University, Kafrelsheikh, Egypt
| |
Collapse
|
4
|
Raj A, Pradhan S, Shetty P, Kadakampally D, Shetty N. Comparison of crestal bone loss and papilla fill after conventional and immediate implant placement: A 12 month clinical and radiographic prospective study. F1000Res 2024; 12:821. [PMID: 38106651 PMCID: PMC10724648 DOI: 10.12688/f1000research.131411.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 01/03/2024] [Indexed: 12/19/2023] Open
Abstract
Background The problem of missing teeth persists in all age groups. The main objective of implants in dentistry is to provide a restoration that reconstructs the shape and restores esthetics and functions of edentulous areas. The objectives of this study are to compare the crestal bone level changes and papillary fill after placement of implants in fresh extraction socket, i.e. immediate implant placement, and healed extraction socket, i.e. delayed or conventional implant placement, and to assess other clinical parameters such as modified plaque index (mPI), modified gingival index (mGI) and gingival biotype in between the groups and within the groups. Methods 18 patients were recruited in the study out of which 9 patients received implants as per immediate implant placement protocol (group 1) and 9 patients received implants as per conventional implant placement protocol (group 2). All patients were evaluated for gingival biotype, mPI and mGI and papillary fill was assessed as per Jemt's papilla score as clinical parameters. Implant site was assessed for radiographic bone loss using Image J software. Statistical analysis was performed using independent t test, paired t test and chi square test. Results At the end of 1 year, results showed that crestal bone loss was seen more in the immediate group than the conventional group. Conventional implants showed better papillary fill than implants placed in fresh extraction sockets. Plaque scores were assessed as per modified plaque index, which showed better results in the conventional group. Modified gingival index was used to assess gingival status which showed better results in the immediate group one year later. Conclusions Findings from the study suggest that crestal bone loss was found to be increased in the immediate group than the conventional group and papillary fill was better in the conventional group than the immediate group.Registration: CTRI ( CTRI/2019/09/021340).
Collapse
Affiliation(s)
- Akanksha Raj
- Ex postgraduate student, Department of Periodontics, Manipal College of Dental Sciences, Mangalore, Manipal Academy of Higher Education, Karnataka, 575001, India
| | - Sweta Pradhan
- Ex postgraduate student, Department of Periodontics, Manipal College of Dental Sciences, Mangalore, Manipal Academy of Higher Education, Karnataka, 575001, India
| | - Preetha Shetty
- Associate Professor, Gulf Medical University, Ajman, United Arab Emirates
| | - David Kadakampally
- Associate professor, Department of Periodontics, Manipal College of Dental Sciences, Mangalore, Manipal Academy of Higher Education, Karnataka, 575001, India
| | - Neetha Shetty
- Professor and HOD, Department of Periodontics, Manipal College of Dental Sciences, Mangalore, Manipal Academy of Higher Education, Karnataka, 575001, India
| |
Collapse
|
5
|
Akshaya K, Rajasekar A. Association between Gingival Biotype and Crestal Bone Loss in Implants Placed in Anterior Maxilla. J Long Term Eff Med Implants 2024; 34:71-78. [PMID: 37938208 DOI: 10.1615/jlongtermeffmedimplants.2023045450] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
BACKGROUND When bone loss occurs around an implant, it can cause esthetic compromise, which might affect the tissue level design. Thus, bone level design implants are usually preferred if a natural emergence profile is important. The gingival biotype had been identified as a significant factor in the stability of crestal bone. AIM The aim of the current study is to analyze the gingival biotype and crestal bone in implants placed in anterior maxilla. MATERIALS AND METHODS retrospective study was conducted using the case records of patients in University Hospital. Data on the gingival biotype and crestal bone loss in implants placed in anterior maxilla were collected (sample size = 96 patients) and analyzed for association with age and gender by descriptive statistics and chi-square association. RESULTS In thick gingival biotype 59.3% of the cases showed no crestal bone loss and 5.2% of the patients showed only 1 mm of bone loss, but in case of thin gingival biotype, 16.6% of patients had 1 mm of bone loss, 5.2% of them has 2 mm of bone loss, and 1% of them had bone loss of 3 mm and above, with a significant p value of 0.02 (less than 0.05) showing a strong association between gingival biotype and crestal bone loss around implants. CONCLUSION It can be concluded that there exists a significant association between gingival biotype and crestal bone loss around implants placed in anterior maxilla.
Collapse
Affiliation(s)
- K Akshaya
- Department of Periodontology, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Chennai, India
| | - Arvina Rajasekar
- Department of Periodontology, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Chennai, India
| |
Collapse
|
6
|
Abi Rached S, Chakar C, Samarani R, Menassa G, Sembronio S, Pucci R, Calabrese L, Cantore S, Malcangi A, Spirito F, DI Cosola M. Radiographic marginal bone level evaluation around two different tissue-level implant systems: a one-year prospective study. Minerva Dent Oral Sci 2023; 72:298-311. [PMID: 37326504 DOI: 10.23736/s2724-6329.23.04786-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
BACKGROUND Marginal bone loss, is a frequently reported variable in the evaluation of dental implants. The primary objective of this study was to evaluate radiographic marginal bone level changes around the two different tissue-level implant systems placed adjacently in the posterior maxilla or mandible. The influence of implant macro-geometry and vertical soft tissue thickness on marginal bone loss were also evaluated. METHODS Seven patients were included in the study and a total of 18 implants were analyzed. Each patient received two different implants placed adjacently in the maxilla or the mandible. The implants used in our study were either Straumann® SP cylindrical implants or JD Octa® tapered implants. During the surgery, vertical soft-tissue thickness was measured with a periodontal probe placed on the top of the bony crest and in the center of the future implant site. Healing abutments were then seated. Three months following implant placement, impressions were taken, and screw-retained metal ceramic prostheses were delivered. Standardized intraoral radiographs were taken immediately after implant placement and one year following implant loading in order to assess marginal bone level changes. RESULTS Results showed a mean marginal bone loss of 0.55±0.5 mm for Straumann® SP implants and 0.39±0.49 mm for JD Octa® implants after one year of loading and the difference was not statistically significant between the two systems. A statistically significant correlation was found between soft tissue thickness and marginal bone loss; in sites with thin mucosal tissues (≤2 mm), there was significantly greater bone loss compared to sites with thick, soft tissues (> 2 mm) in both implants. CONCLUSIONS Radiographic marginal bone loss was not statistically different between the two implant systems at the one-year examination period. Moreover, vertical soft tissue thickness influenced marginal bone loss regardless of the implant system used.
Collapse
Affiliation(s)
- Sandrine Abi Rached
- Department of Periodontology, Faculty of Dental Medicine, Cranio-Facial Research Laboratory, Saint-Joseph University of Beirut, Beirut, Lebanon
| | - Carole Chakar
- Department of Periodontology, Faculty of Dental Medicine, Cranio-Facial Research Laboratory, Saint-Joseph University of Beirut, Beirut, Lebanon
| | - Rawad Samarani
- Department of Periodontology, Faculty of Dental Medicine, Cranio-Facial Research Laboratory, Saint-Joseph University of Beirut, Beirut, Lebanon
| | - Gabriel Menassa
- Department of Periodontology, Faculty of Dental Medicine, Cranio-Facial Research Laboratory, Saint-Joseph University of Beirut, Beirut, Lebanon
| | - Salvatore Sembronio
- Department of Maxillofacial Surgery, Academic Hospital of Udine, University of Udine, Udine, Italy
| | - Resi Pucci
- Department of Oral and Maxillofacial Sciences, Sapienza University, Rome, Italy
| | - Leonardo Calabrese
- Department of Oral Biomedicine and Prevention, Tor Vergata University, Rome, Italy
| | - Stefania Cantore
- Regional Dental Community Service "Sorriso & Benessere - Ricerca e Clinica", Bari, Italy -
| | | | - Francesca Spirito
- Department of Clinical and Experimental Medicine, University of Foggia, Foggia, Italy
| | - Michele DI Cosola
- Department of Clinical and Experimental Medicine, University of Foggia, Foggia, Italy
| |
Collapse
|
7
|
Jose EP, Paul P, Reche A. Soft Tissue Management Around the Dental Implant: A Comprehensive Review. Cureus 2023; 15:e48042. [PMID: 38034248 PMCID: PMC10688389 DOI: 10.7759/cureus.48042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Accepted: 10/31/2023] [Indexed: 12/02/2023] Open
Abstract
In the modern world, there is an increasing concern among people regarding dental esthetics. Edentulism can impact one's appearance, affect the regular bite, and can even affect mental well-being. There are various options to replace the missing teeth, such as removable dentures, fixed crown and bridge prostheses, and resin-retained bridges. Various factors are evaluated before giving a suitable prosthesis for missing teeth. Implant installation is highly desired by patients as it has a high success and long-term survival rate when used to replace lost teeth. However, several difficulties relating to errors in treatment planning, surgery, soft tissue, and hard tissue care, and infections may compromise the efficacy of implant therapy. An increasing body of research indicates that long-term clinical stability and esthetics may be significantly impacted by the stability of the soft tissues around osseointegrated dental implants. Consequently, when implant therapy is planned, the dental surgeon has to have the necessary expertise to appropriately handle any possible causes of difficulties in addition to being able to carry out the necessary actions to maintain or develop stable soft tissue. Various augmentation procedures can be done for the correction of any deformity or inadequacy of soft tissues. Osseointegration is a fundamental part of the success of the implant treatment. It is the formation of a biological and functional connection between the bone and the implant increasing the stability of implant prosthesis. After the treatment, the patient should be counseled for regular and proper oral hygiene practices suitable for the implant. A proper follow-up has to be done after implant treatment in regular intervals. Any postoperative soft tissue complications, such as peri-implantitis or peri-implant mucositis, should be addressed immediately, and appropriate treatment has to be given. This article reviews about the procedures before and after the implant placement to prevent or treat soft tissue complications, ultimately leading to the success of the implant.
Collapse
Affiliation(s)
- Elizabeth P Jose
- Public Health Dentistry, Sharad Pawar Dental College, Datta Meghe Institute of Higher Education and Research, Wardha, IND
| | - Priyanka Paul
- Public Health Dentistry, Sharad Pawar Dental College, Datta Meghe Institute of Higher Education and Research, Wardha, IND
| | - Amit Reche
- Public Health Dentistry, Sharad Pawar Dental College, Datta Meghe Institute of Higher Education and Research, Wardha, IND
| |
Collapse
|
8
|
Razali M, Chai WL, Omar RA, Ngeow WC. Contour Analysis of Three-Dimensional Peri-Implant Mucosal Model as an Endpoint Analysis of Photofunctionalization Effects on Implant Abutment Materials. MATERIALS (BASEL, SWITZERLAND) 2023; 16:5529. [PMID: 37629819 PMCID: PMC10456501 DOI: 10.3390/ma16165529] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 08/01/2023] [Accepted: 08/07/2023] [Indexed: 08/27/2023]
Abstract
INTRODUCTION The objective of this study was to examine the effect of photofunctionalization on the soft-tissue contour formed at the interface of various abutment materials using end-point analyses obtained from the three-dimensional oral mucosal model (3D-OMMs). METHODS Commercially pure titanium (CPTi), alumina-toughened zirconia (ATZ), and yttria-stabilized zirconia (YSZ) made into discs shapes were classified into two groups: UV-treated (PTx) and non-treated (NTx). The materials in PTx groups were exposed to UV light for 12 min. Human gingival fibroblasts and TR146 epithelial cell lines co-cultured on the acellular dermal membrane were used to construct the 3D-OMM. After 4 days of culture, the discs were inserted into the holes prepared within the membrane of 3D-OMMs. The contour formed by the tissue was evaluated after 14 days of culture. RESULTS The UV treatment of abutment materials resulted in the formation of more non-pocket-tissue types among the PTx group (p = 0.002). Of all materials tested, soft tissue contour around YSZ showed higher scores for the non-pocket type in both non- and UV-treated groups. CONCLUSIONS The non-pocket type of tissue attachment was frequently found in all surfaces modified by photofunctionalization, particularly zirconia. The 3D-OMM can be used to evaluate the biological endpoints of implant surface modifications.
Collapse
Affiliation(s)
- Masfueh Razali
- Department of Restorative Dentistry, Faculty of Dentistry, Universiti Kebangsaan Malaysia, Kuala Lumpur 50300, Malaysia
| | - Wen Lin Chai
- Department of Restorative Dentistry, Faculty of Dentistry, University of Malaya, Kuala Lumpur 50603, Malaysia; (W.L.C.); (R.A.O.)
| | - Ros Anita Omar
- Department of Restorative Dentistry, Faculty of Dentistry, University of Malaya, Kuala Lumpur 50603, Malaysia; (W.L.C.); (R.A.O.)
| | - Wei Cheong Ngeow
- Department of Oral & Maxillofacial Clinical Sciences, Faculty of Dentistry, University of Malaya, Kuala Lumpur 50603, Malaysia
| |
Collapse
|
9
|
Troiano G, Fanelli F, Rapani A, Zotti M, Lombardi T, Zhurakivska K, Stacchi C. Can radiomic features extracted from intra-oral radiographs predict physiological bone remodelling around dental implants? A hypothesis-generating study. J Clin Periodontol 2023; 50:932-941. [PMID: 36843362 DOI: 10.1111/jcpe.13797] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Revised: 02/02/2023] [Accepted: 02/19/2023] [Indexed: 02/28/2023]
Abstract
AIM The rate of physiological bone remodelling (PBR) occurring after implant placement has been associated with the later onset of progressive bone loss and peri-implantitis, leading to medium- and long-term implant therapy failure. It is still questionable, however, whether PBR is associated with specific bone characteristics. The aim of this study was to assess whether radiomic analysis could reveal not readily appreciable bone features useful for the prediction of PBR. MATERIALS AND METHODS Radiomic features were extracted from the radiographs taken at implant placement (T0) using LifeX software. Because of the multi-centre design of the source study, ComBat harmonization was applied to the cohort. Different machine-learning models were trained on selected radiomic features to develop and internally validate algorithms capable of predicting high PBR. In addition, results of the algorithm were included in a multivariate analysis with other clinical variables (tissue thickness and depth of implant position) to test their independent correlation with PBR. RESULTS Specific radiomic features extracted at T0 are associated with higher PBR around tissue-level implants after 3 months of unsubmerged healing (T1). In addition, taking advantage of machine-learning methods, a naive Bayes model was trained using radiomic features selected by fast correlation-based filter (FCBF), which showed the best performance in the prediction of PBR (AUC = 0.751, sensitivity = 66.0%, specificity = 68.4%, positive predictive value = 73.3%, negative predictive value = 60.5%). In addition, results of the whole model were included in a multivariate analysis with tissue thickness and depth of implant position, which were still found to be independently associated with PBR (p-value < .01). CONCLUSION The combination of radiomics and machine-learning methods seems to be a promising approach for the early prediction of PBR. Such an innovative approach could be also used for the study of not readily disclosed bone characteristics, thus helping to explain not fully understood clinical phenomena. Although promising, the performance of the radiomic model should be improved in terms of specificity and sensitivity by further studies in this field.
Collapse
Affiliation(s)
- Giuseppe Troiano
- Department of Clinical and Experimental Medicine, University of Foggia, Foggia, Italy
| | - Francesco Fanelli
- Department of Clinical and Experimental Medicine, University of Foggia, Foggia, Italy
| | - Antonio Rapani
- Department of Medical, Surgical and Health Sciences, University of Trieste, Trieste, Italy
| | - Matteo Zotti
- Department of Medical, Surgical and Health Sciences, University of Trieste, Trieste, Italy
| | - Teresa Lombardi
- Department of Health Sciences, University "Magna Graecia", Catanzaro, Italy
| | - Khrystyna Zhurakivska
- Department of Clinical and Experimental Medicine, University of Foggia, Foggia, Italy
| | - Claudio Stacchi
- Department of Medical, Surgical and Health Sciences, University of Trieste, Trieste, Italy
| |
Collapse
|
10
|
Fuda S, Martins BGDS, Castro FCD, Heboyan A, Gehrke SA, Fernandes JCH, Mello-Moura ACV, Fernandes GVO. Marginal Bone Level and Clinical Parameter Analysis Comparing External Hexagon and Morse Taper Implants: A Systematic Review and Meta-Analysis. Diagnostics (Basel) 2023; 13:diagnostics13091587. [PMID: 37174979 PMCID: PMC10178059 DOI: 10.3390/diagnostics13091587] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Revised: 04/18/2023] [Accepted: 04/25/2023] [Indexed: 05/15/2023] Open
Abstract
The goal of this systematic review was to verify the marginal bone loss (MBL) and other clinical parameters comparing external hexagon (EH) and Morse taper (MT) implants when they were evaluated within the same study. The focused question was, "For patients (P) treated with external connection (I) or Morse taper (C) dental implants, were there differences in the marginal bone crest maintenance after at least three months in occlusal function (O)"? As for the inclusion criteria that were considered, they included clinical studies in English that compared the MBL in implants with EH and MT, with follow-up of at least three months, that were published between 2011 and 2022; as for the exclusion criteria, they included publications investigating only one type of connection that analyzed other variables and did not report results for the MBL, reports based on questionnaires, interviews, and case reports/series, systematic reviews, or studies involving patients with a significant health problem (ASA Physical Status 3 and above). The PubMed/MEDLINE, Embase, and Web of Science databases were screened, and all of the data obtained were registered in a spreadsheet (Excel®). The Jadad scale was used to assess the quality of the studies. A total of 110 articles were initially identified; 11 were considered for full-text reading. Then, six articles (four RCTs and two prospective studies) met the eligibility criteria and were included in this study. A total of 185 patients (mean age of 59.71) were observed, and the follow-up ranged from 3 months to 36 months. A total of 541 implants were registered (267 EH and 274 MT). The survival rate ranged between 96% and 100% (the average was 97.82%). The MBL was compared among all periods studied; therefore, the common assessment period was the 12-month follow-up, presenting greater MBL for EH than for MT (p < 0.001). A mean MBL of 0.60 mm (95% CI 0.43-0.78) was found after the same period. BoP was reported in 5 studies and plaque index was reported in 4 (2 with more than 30%). Deep PD was observed in three studies. High heterogeneity was observed (I2 = 85.06%). Thus, within the limitation of this review, it was possible to conclude that there is higher bone loss in EH than in MT implants when evaluating and comparing this variable within the same study. However, the results must be carefully interpreted because of this review's limited number of clinical studies, the short assessment period, and the high heterogeneity found.
Collapse
Affiliation(s)
- Samuele Fuda
- Faculty of Dental Medicine, Universidade Católica Portuguesa, 3504-505 Viseu, Portugal
| | | | | | - Artak Heboyan
- Department of Prosthodontics, Faculty of Stomatology, Yerevan State Medical University after Mkhitar Heratsi, Str. Koryun 2, Yerevan 0025, Armenia
| | - Sergio Alexandre Gehrke
- Department of Research, Bioface/PgO/UCAM, Calle Cuareim 1483, Montevideo 11100, Uruguay
- Instituto de Bioingenieria, Universidad Miguel Hernández, 03202 Elche, Spain
- Department of Biotechnology, Universidad Católica de Murcia (UCAM), 30107 Murcia, Spain
| | | | - Anna Carolina Volpi Mello-Moura
- Faculty of Dental Medicine, Universidade Católica Portuguesa, 3504-505 Viseu, Portugal
- Centre for Interdisciplinary Research in Health (CIIS), Universidade Católica Portuguesa, 3504-505 Viseu, Portugal
| | - Gustavo Vicentis Oliveira Fernandes
- Periodontics and Oral Medicine Department, University of Michigan School of Dentistry, Ann Arbor, MI 48109, USA
- Centre for Interdisciplinary Research in Health (CIIS), Universidade Católica Portuguesa, 3504-505 Viseu, Portugal
| |
Collapse
|
11
|
Boldeanu LC, Popa-Wagner A, Boariu M, Stratul SI, Rusu D, Vela O, Roman A, Surlin P, Kardaras G, Chinnici S, Vaduva A. Influence of Section Thickness on the Accuracy and Specificity of Histometric Parameters Using Confocal Laser Scanning Microscopy in a Canine Model of Experimental Peri-Implantitis-A Proof of Concept. J Clin Med 2023; 12:jcm12072462. [PMID: 37048546 PMCID: PMC10095515 DOI: 10.3390/jcm12072462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Revised: 03/17/2023] [Accepted: 03/20/2023] [Indexed: 04/14/2023] Open
Abstract
OBJECTIVES Tissue breakdown was assessed by confocal laser scanning microscopy (CLSM) using autofluorescence around implants with ligatures, on a dog hemimandible. Influence of section thickness on the accuracy of histometrical observations was also evaluated, in comparison with thin sections in light microscopy. MATERIAL AND METHODS Three months after tooth extraction, implants were placed. Two months after abutment placement, ligatures were placed with no plaque control. 11 months post-implantation, the animal was sacrificed. Undecalcified thin (30 µm) sections were cut, stained and evaluated by light microscopy to be used as a reference. Additional sections were performed, so that another pair of unstained thick sections resulted (250-300 µm). Tissue loss was assessed using histomorphometric parameters under CLSM and was compared to the light microscopy reference ones. RESULTS Morphometry confirmed tissue loss more pronounced on the "thick" and quick sections, when compared to the time-consuming and technique-sensitive "thin" ones. CONCLUSIONS Within the limits of the present study, the adequacy of histometrical observations under CLSM reveal commensurable information about soft-tissue-bone-implant details, when compared to traditional light microscopy histological protocols. The CLSM investigation may seem demanding, yet the richness of data acquired may justify this approach, provided seatbacks caused by improper manipulation of "thick" sections are avoided.
Collapse
Affiliation(s)
- Lucia-Camelia Boldeanu
- Department of Periodontology, Faculty of Dental Medicine, Anton Sculean Research Center for Periodontal and Peri-Implant Diseases, "Victor Babes" University of Medicine and Pharmacy, 300041 Timisoara, Romania
| | - Aurel Popa-Wagner
- Department of Neurology, Chair of Vascular Neurology and Dementia, University Hospital Essen, 45147 Essen, Germany
- Center for Experimental and Clinical Medicine, University of Medicine and Pharmacy Craiova, 200349 Craiova, Romania
| | - Marius Boariu
- Department of Endodontics, Faculty of Dental Medicine, TADERP Research Center, "Victor Babes" University of Medicine and Pharmacy, 300041 Timisoara, Romania
| | - Stefan-Ioan Stratul
- Department of Periodontology, Faculty of Dental Medicine, Anton Sculean Research Center for Periodontal and Peri-Implant Diseases, "Victor Babes" University of Medicine and Pharmacy, 300041 Timisoara, Romania
| | - Darian Rusu
- Department of Periodontology, Faculty of Dental Medicine, Anton Sculean Research Center for Periodontal and Peri-Implant Diseases, "Victor Babes" University of Medicine and Pharmacy, 300041 Timisoara, Romania
| | - Octavia Vela
- Department of Periodontology, Faculty of Dental Medicine, Anton Sculean Research Center for Periodontal and Peri-Implant Diseases, "Victor Babes" University of Medicine and Pharmacy, 300041 Timisoara, Romania
| | - Alexandra Roman
- Applicative Periodontal Regeneration Research Unit, Department of Peridontology, Faculty of Dental Medicine, Iuliu Hatieganu University of Medicine and Pharmacy, 400012 Cluj Napoca, Romania
| | - Petra Surlin
- Department of Periodontology, Faculty of Dental Medicine, University of Medicine and Pharmacy, 200349 Craiova, Romania
| | - Georgios Kardaras
- Department of Periodontology, Faculty of Dental Medicine, Anton Sculean Research Center for Periodontal and Peri-Implant Diseases, "Victor Babes" University of Medicine and Pharmacy, 300041 Timisoara, Romania
| | - Salvatore Chinnici
- Department of Periodontology, Faculty of Dental Medicine, Anton Sculean Research Center for Periodontal and Peri-Implant Diseases, "Victor Babes" University of Medicine and Pharmacy, 300041 Timisoara, Romania
| | - Adrian Vaduva
- Department of Pathology, Faculty of Medicine, ANAPATMOL Research Center, "Victor Babes" University of Medicine and Pharmacy, 300041 Timisoara, Romania
- County Emergency Hospital, L. Rebreanu Street, nr. 156, 300723 Timisoara, Romania
| |
Collapse
|
12
|
Systematic assessment of soft tissue level and bone level dental implants. JOURNAL OF ORAL AND MAXILLOFACIAL SURGERY, MEDICINE, AND PATHOLOGY 2023. [DOI: 10.1016/j.ajoms.2023.02.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
|
13
|
Stacchi C, Lamazza L, Rapani A, Troiano G, Messina M, Antonelli A, Giudice A, Lombardi T. Marginal bone changes around platform-switched conical connection implants placed 1 or 2 mm subcrestally: A multicenter crossover randomized controlled trial. Clin Implant Dent Relat Res 2023; 25:398-408. [PMID: 36725016 DOI: 10.1111/cid.13186] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Revised: 01/04/2023] [Accepted: 01/16/2023] [Indexed: 02/03/2023]
Abstract
INTRODUCTION This study analyzes early marginal bone modifications occurring around platform-switched implants with conical connection placed 1 or 2 mm subcrestally. METHODS This crossover randomized controlled trial enrolled partially edentulous patients needing two implants in either the posterior maxilla or mandible. Each patient received two platform-switched implants with conical connection inserted 2 mm (Test) and 1 mm (Control) subcrestally. Definitive abutments were immediately connected and, after 4 months of unsubmerged healing, screwed metal-ceramic crowns were delivered. Radiographs were taken at implant placement (T0), prosthesis delivery (T1), and after 1 year of prosthetic loading (T2). RESULTS Fifty-one patients (25 males and 26 females; mean age 61.2 ± 12.1 years) totaling 102 implants were included in the final analysis. Mean peri-implant bone level (PBL) reduction from T0 to T2 was not significantly different around Test (0.49 ± 0.32 mm) and Control implants (0.46 ± 0.35 mm; p = 0.66). Multivariate linear regression models highlighted a significant positive correlation between history of periodontitis and PBL reduction. At T2, no Test group implant and 6 Control group implants exhibited PBL below the implant platform (11.8% of Control group implants). CONCLUSION No significant differences in peri-implant marginal bone changes were demonstrated after 1 year of prosthetic loading between platform-switched implants with conical connection inserted either 1 or 2 mm subcrestally. However, 2 mm subcrestal placement resulted in deeper implant positioning at T2, with no exposure of treated implant surface and potential preventive effect against subsequent peri-implant pathology.
Collapse
Affiliation(s)
- Claudio Stacchi
- Department of Medical, Surgical and Health Sciences, University of Trieste, Trieste, Italy
| | - Luca Lamazza
- Department of Oral and Maxillofacial Sciences, Sapienza University of Rome, Rome, Italy
| | - Antonio Rapani
- Department of Medical, Surgical and Health Sciences, University of Trieste, Trieste, Italy
| | - Giuseppe Troiano
- Department of Clinical and Experimental Medicine, University of Foggia, Foggia, Italy
| | | | | | - Amerigo Giudice
- Department of Health Sciences, Magna Graecia University, Catanzaro, Italy
| | - Teresa Lombardi
- Department of Health Sciences, Magna Graecia University, Catanzaro, Italy
| |
Collapse
|
14
|
Ayyadanveettil P, Thavakkara V, Koodakkadavath S, Thavakkal A. Influence of collar height of definitive restoration and type of luting cement on the amount of residual cement in implant restorations: A clinical study. J Prosthet Dent 2023; 129:109-115. [PMID: 34116840 DOI: 10.1016/j.prosdent.2021.03.032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2019] [Revised: 03/22/2021] [Accepted: 03/22/2021] [Indexed: 01/18/2023]
Abstract
STATEMENT OF PROBLEM Residual cement in the peri-implant sulcus may cause peri-implant mucositis, which can lead to peri-implantitis. Clinical studies comparing the role of the collar height of the definitive restoration and the type of cement used for luting the prosthesis in the amount of residual cement are lacking. PURPOSE The purpose of this clinical study was to determine the volume of residual cement left undetected in the peri-implant sulcus by an implant prosthesis with 3 different collar heights and 3 luting cements. MATERIAL AND METHODS Participants with single implants in the premolar region were divided into 3 groups of 10 according to the distance from the peri-implant soft tissue crest to the implant platform: group low collar (sulcus depth <2 mm), group medium collar (2-4 mm), and group high collar (>4 mm). A metal-ceramic crown with an occlusal opening was fabricated on a straight titanium abutment, which facilitated removal of the crown along with the abutment after cementation. The implant luting cements used were composite resin cement (RelyX U200), Type I glass ionomer cement (GC Gold Label 1), and zinc oxide noneugenol interim luting cement (RelyX Temp NE). The modified crown was cemented with 1 cement each during the impression, bisque evaluation, and definitive crown cementation appointments. The crown was retrieved, and the residual cement collected during each appointment. The measurements obtained were statistically analyzed with general linear model analysis followed by post hoc testing using the Bonferroni test (α=.05). RESULTS Mean volume of the residual excess cement (mm3) formed in group low collar was 0.33 ±0.17, 0.26 ±0.17, and 0.08 ±0.08 for subgroups Resin, GIC, and ZNE, respectively. In group medium collar, it was 1.18 ±0.31, 1.08 ±0.3, and 0.61 ±0.32; and in group high collar, it was 2.33 ±0.31, 2.1 ±0.74, and 1.31 ±0.56 for the same subgroup, respectively. There was a statistically significant difference in the formation of REC between the collar height groups (P<.001). Among the luting cements, zinc oxide noneugenol cement produced significantly lower residual cement compared with the other 2 cements, and there was no statistically significant difference between the glass ionomer and resin cements (P>.05). CONCLUSIONS The collar height of the definitive restoration and the type of luting cement play significant roles in the formation of residual cement in fixed implant-supported restorations.
Collapse
Affiliation(s)
| | - Vinni Thavakkara
- Additional Professor, Department of Prosthodontics, Government Dental College, Kozhikode, Kerala, India
| | | | - Aneesa Thavakkal
- Senior Resident, Department of Prosthodontics, Government Dental College, Kozhikode, Kerala, India
| |
Collapse
|
15
|
Gamborena I, Sasaki Y, Blatz MB. Transmucosal abutments in the esthetic zone: Surgical and prosthetic considerations. J ESTHET RESTOR DENT 2023; 35:148-157. [PMID: 36628558 DOI: 10.1111/jerd.13006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Accepted: 12/20/2022] [Indexed: 01/12/2023]
Abstract
OBJECTIVE This article describes an updated step-by-step protocol for transmucosal abutment selection and treatment sequencing after immediate implant placement in the esthetic zone. CLINICAL CONSIDERATIONS Current surgical and prosthetic concepts strive to preserve hard and soft-tissues to provide optimal esthetics at the implant-abutment interface. Consequently, restoring implants in the esthetic zone with transmucosal abutments presents a great challenge and must take into consideration implant depth, angulation, and bucco-lingual position as well as transmucosal height and space for an optimized emergence profile of the restoration and the dimensions of the anterior tooth to be restored. The proper selection of the type, shape, and dimensions of implant components and connections, determined by the product portfolio offered by the implant manufacturer, play a critical role in the ability to adequately address these challenges. This article provides an update on surgical and prosthetic workflows for single implant restorations in the esthetic zone. CONCLUSIONS Following esthetic, mechanical, and biologic principles, the long-term success of implant-supported restorations in the esthetic zone is directly correlated to proper execution and sequencing of surgical and prosthetic treatment steps, especially after immediate implant placement. These steps must be critically assessed based on the current scientific evidence to achieve the desired clinical outcomes on a predictable and consistent basis. CLINICAL SIGNIFICANCE Selection of surgical and prosthetic treatment protocols to achieve ideal esthetic outcomes and emergence profiles in implant dentistry is often a great challenge, not only determined by technical and clinical skills of the provider but also by the type and dimensions of implant components and connections offered by the manufacturer. Following certain decision-making principles and workflows are key for clinical success with implant-supported restorations after immediate implant placement the esthetic zone.
Collapse
Affiliation(s)
- Iñaki Gamborena
- Department of Preventive and Restorative Sciences, University of Pennsylvania School of Dental Medicine, Philadelphia, Pennsylvania, USA.,Private Practice, San Sebastian, Spain
| | | | - Markus B Blatz
- Department of Preventive and Restorative Sciences, University of Pennsylvania School of Dental Medicine, Philadelphia, Pennsylvania, USA
| |
Collapse
|
16
|
Salem MT, El-Layeh M, El-Farag SAA, Salem AS, Attia A. Clinical assessment of different implant-supported esthetic crown systems fabricated with semi-digital workflow: Two-year prospective study. J ESTHET RESTOR DENT 2022; 34:1247-1262. [PMID: 36120840 DOI: 10.1111/jerd.12961] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Revised: 07/21/2022] [Accepted: 08/18/2022] [Indexed: 11/27/2022]
Abstract
OBJECTIVE To assess the clinical outcome of three esthetic implant-supported crown systems fabricated with semi-digital workflow and their influence on the clinical outcome of dental implants. MATERIAL AND METHODS A total of 30 participants had received dental implants restoring missing maxillary first/second premolars. After 6 weeks, customized zirconia abutments were early loaded. Two months later, the definitive crowns were fabricated using semi-digital workflow and cemented. According to the crown material, 3 groups were randomly allocated; group (Z): ultrahigh-translucent monolithic zirconia, group (C): resin-matrix ceramic and group (P): polyetherketoneketone veneered with light-cured composite resin. Clinical outcomes including the survival and success rates were evaluated at baseline, 6, 12, 18, and 24 months. RESULTS The survival rate for all studied groups was 100%, while their success rate was 100% for group (Z) and 90% for group (C) and group (P). Based on the functional implant prosthodontic score, a statistically significant difference was detected between group (Z) and group (P) (p < 0.001) as well as between group (C) and group (P) (p = 0.01). CONCLUSIONS The zirconia group had the most favorable clinical behavior, while the polyetherketoneketone had the least. All crown systems had comparable success rates with similar values of the peri-implant marginal bone loss. CLINICAL SIGNIFICANCE Using semi-digital workflow, ultrahigh-translucent monolithic zirconia, resin-matrix ceramic and polyetherketoneketone veneered with light-cured composite resin can be considered as favorable implant-supported crowns. The implant-supported crown system based on polyetherketoneketone veneered with light-cured composite resin is counted as a promising esthetic and restorative option.
Collapse
Affiliation(s)
- Mohammed Talaat Salem
- Fixed Prosthodontics Department, Faculty of Dentistry, Mansoura University, Mansoura, Egypt
| | - Mohamed El-Layeh
- Fixed Prosthodontics Department, Faculty of Dentistry, Mansoura University, Mansoura, Egypt
| | - Shaimaa Ahmed Abo El-Farag
- Fixed Prosthodontics Department, Faculty of Dentistry, Mansoura University, Mansoura, Egypt.,OMFS Department, Faculty of Dentistry, Mansoura University, Mansoura, Egypt
| | - Ahmed S Salem
- OMFS Department, Faculty of Dentistry, Mansoura University, Mansoura, Egypt
| | - Ahmed Attia
- Fixed Prosthodontics Department, Faculty of Dentistry, Mansoura University, Mansoura, Egypt
| |
Collapse
|
17
|
Using Different Low-Profile Abutments for Assisting Mandibular Implant Overdenture: A Split-Mouth Study. Int J Dent 2022; 2022:8738220. [PMID: 35437443 PMCID: PMC9013306 DOI: 10.1155/2022/8738220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Revised: 03/08/2022] [Accepted: 03/20/2022] [Indexed: 11/18/2022] Open
Abstract
Background Using a pair of different low-profile abutments to assist mandibular implant overdenture (MIOD) in limited restorative space is questionable due to the different morphology. Objective To investigate the marginal bone level (MBL) change and peri-implant-tissue health (PITH) around a pair of OT Equator® and Locator® suprastructures assisting MIOD. Methods Seventeen edentulous patients received MIOD assisted by OT Equator® and Locator®. MBL change was investigated at the implant loading (T1), after six months (T2) and twelve months (T3) of implant loading. PITH was evaluated at T2 and T3. Results There was within abutment significant difference in MBL change after T2 and T3 of loading for Locator (0.05 ± 0.02 and 0.32 ± 0.08, respectively) (P=0.01); and for Equator (0.11 ± 0.08 and 0.21 ± 0.09, respectively) (P=0.01). Also, there was a significant difference between Locator and Equator on the modified plaque index (MPI) after T3 (P=0.01). The significant results were recorded for the MPI at T2 and T3 for Locator (0.92 ± 0.26 and 1.5 ± 0.51, respectively) (P=0.01) and for Equator (0.82 ± 0.26 and 1.42 ± 0.51, respectively) (P=0.003). For modified bleeding index, there was significant difference at T2 and T3 for Locator (0.57 ± 0.19 and 1.14 ± 0.41, respectively) (P=0.03) and for Equator (0.46 ± 0.22 and 1.07 ± 0.41, respectively) (P=0.01). For gingival index, there was significant difference at T2 and T3 for Locator (0.57 ± 0.11 and 1.28 ± 0.35, respectively) (P=0.001) and for Equator (0.35 ± 0.21 and 1.1 ± 0.46, respectively) (P=0.001). Conclusions Using different pairs of the low-profile OT Equator® and Locator® abutments to assist MIOD is clinically acceptable based on the MBL change and PITH outcomes.
Collapse
|
18
|
Integration of collagen fibers in connective tissue with dental implant in the transmucosal region. Int J Biol Macromol 2022; 208:833-843. [PMID: 35367473 DOI: 10.1016/j.ijbiomac.2022.03.195] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Revised: 03/26/2022] [Accepted: 03/28/2022] [Indexed: 12/26/2022]
Abstract
Dental implants have been widely accepted as an ideal therapy to replace the missing teeth for its good performance in aspects of mechanical properties and aesthetic outcomes. Its restorative success is contributed by not only the successful osseointegration of the implant but also the tight soft tissue integration, especially the collagen fibers, in the transmucosal region. Soft tissue attaching to the dental implant/abutment is overall similar, but in some aspects distinct with that seen around natural teeth and soft tissue integration can be enhanced via several surface modification methods. This review is going to focus on the current knowledge of the transmucosal zone around the dental implants (compared with natural teeth), and latest strategies in use to fine-tune the collagen fibers assembly in the connective tissue, in an attempt to enhance soft tissue integration.
Collapse
|
19
|
Dethier F, Bacevic M, Lecloux G, Seidel L, Rompen E, Lambert F. The Effects of Abutment Materials on Peri-Implant Soft Tissue Integration: A Study in Minipigs. J Prosthodont 2022; 31:585-592. [PMID: 35258144 DOI: 10.1111/jopr.13504] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Accepted: 03/02/2022] [Indexed: 11/28/2022] Open
Abstract
PURPOSE To evaluate, in a minipig model, the soft tissue integration of four different transmucosal materials, as well as the peri-implant bone remodeling. MATERIALS AND METHODS A total of 40 implants were placed in five minipigs in a single stage surgery, and two of each of the following abutment materials were used in each animal: (1) titanium (Ti; control), (2) polymethylmethacrylate (PMMA), (3) zirconia (Zi), and (4) veneering ceramic (VC). After a healing period of 3 months, the samples were collected and subjected to non-decalcified histology. The soft tissue dimensions (sulcus, junctional epithelium, and connective tissue attachment) were assessed on each abutment and the distance from the implant margin to first bone-to-implant contact (BIC) was measured. RESULTS The mean biological width-characterized by the sum of junctional epithelium and connective tissue measurements-was 3.8 (0.6) mm and no statistically significant difference was found between the four groups (P = 0.41). However, a long junctional epithelium (3.3-3.8 mm) and a very short connective tissue attachment (0.1-0.2 mm) were observed with all abutments. The measured peri-implant bone remodeling was similar in all four groups (P = 0.88). CONCLUSIONS Within its limitations, the present study showed that all tested materials allowed soft tissue integration, consisting of a long junctional epithelium, extending close to the bone level, and a rather short portion of connective tissue. This article is protected by copyright. All rights reserved.
Collapse
Affiliation(s)
- Frédéric Dethier
- Resident, Department of Periodontology, Oral and Implant Surgery, Faculty of Medicine, University of Liège, Liège, Belgium
| | - Miljana Bacevic
- Postdoctoral Researcher, Dental Biomaterials Research Unit (d-BRU), Faculty of Medicine, University of Liège, Liège, Belgium
| | - Geoffrey Lecloux
- Head of Clinic, Department of Periodontology, Oral and Implant Surgery, Faculty of Medicine, University of Liège, Liège, Belgium
| | - Laurence Seidel
- Statistician, Department of Biostatistics, Faculty of Medicine, University of Liège, Liège, Belgium
| | - Eric Rompen
- Professor, Department of Periodontology, Oral and Implant Surgery, Faculty of Medicine, University of Liège, Liège, Belgium
| | - France Lambert
- Head of Department, Department of Periodontology, Oral and Implant Surgery, Faculty of Medicine, University of Liège, Liège, Belgium.,Professor, Dental Biomaterials Research Unit (d-BRU), Faculty of Medicine, University of Liège, Liège, Belgium
| |
Collapse
|
20
|
Nelluri VV, Roseme KM, Gedela RK. A 3-year prospective cohort study on mandibular anterior cantilever restorations associated with screw-retained implant-supported prosthesis: An in vivo study. J Indian Prosthodont Soc 2021; 21:150-160. [PMID: 33938864 PMCID: PMC8262442 DOI: 10.4103/jips.jips_446_20] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Abstract
Aim: The aim of this study is to evaluate the survival of single implant supported cantilever prosthesis (ISCP) replacing missing two adjacent natural teeth in the anterior mandible. Settings and Design: In vivo - Prospective cohort study. Materials and Methods: Thirty patients with missing both mandibular central incisors were selected. A single implant was used to replace the missing teeth and restored with cantilever screw-retained prosthesis. Twenty-two patients were followed for 3 years for the implant and prosthetic success. Statistical Analysis Used: Weibull test for survival probability. Results: Survival probability of the ISCP for the first 100 days was found to be 97.55%, for 200 days, it was 71.4%, for 250 days, it was 46%, and for 365 days, it was 3.9%, i.e., 20 prosthesis had screw loosening after prosthetic loading. However, it increased to 95.2% at the end of 3 years. Conclusion: Screw-retained ISCP developed early technical complications. After prosthetic loading, the survival probability of the screw-retained ISCP was very low (3.9%) at one year, which increased to 95.2% after retightening and retorquing of the abutment screw, porcelain repair and conformation of the tongue to the prosthesis. The most common prosthetic failure was screw loosening (81%), followed by porcelain fracture (14.3%), and implant survival of 95% at the end of three years.
Collapse
Affiliation(s)
| | | | - Rajani Kumar Gedela
- Department of Periodontics, Army College of Dental Sciences, Secunderabad, Telangana, India
| |
Collapse
|
21
|
Asbi T, Hussein HA, Horwitz J, Gabay E, Machtei EE, Giladi HZ. A single application of chlorhexidine gel reduces gingival inflammation and interleukin 1-β following one-stage implant placement: A randomized controlled study. Clin Implant Dent Relat Res 2021; 23:726-734. [PMID: 34378862 DOI: 10.1111/cid.13041] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Revised: 07/14/2021] [Accepted: 08/02/2021] [Indexed: 12/24/2022]
Abstract
BACKGROUND Chlorhexidine (CHX) is a broad-spectrum antimicrobial agent commonly used in medicine. Application of (CHX) during abutment connection reduced the bacterial load at the implant-abutment interface. We hypothesize this treatment may consequently reduce peri-implant soft tissue inflammation and marginal bone loss. PURPOSE To evaluate the effect of a single application of CHX gel inside the dental implant internal hexagon on peri-implant tissue. METHODS Forty patients were recruited to this randomized, double-blinded, clinical trial. At the time of implant installation, a 4-mm healing abutment was connected to the implant. In the test group, chlorhexidine gel 1% was applied inside the implant hex, whereas control implants did not receive any gel. Clinical and radiographic measurements included soft tissue recession (REC), plaque index (PI), gingival index (GI), plaque index (PI), keratinized mucosa width (KM), probing depth (PD), and a peri-apical parallel x-ray. Peri-implant crevicular fluid (PICF) was collected for cytokine analysis. t-Test was used to compare changes from baseline to 3 months. Mann-Whitney U test and t test were used to compare test and control groups. RESULTS Twenty patients in the test group and 17 in the control group completed the study. One implant in the control group failed to osteointegrate. There were no significant differences between the control and test groups for REC changes, bone loss, and PD. GI was significantly lower in the test group after 1 week (1.79 ± 0.24 vs 0.75 ± 0.18, respectively) and 3 months (1.18 ± 0.21 vs 0.25 ± 0.12, respectively) although PI was equal. At 3 months, interleukin 1-β (IL1-β) was higher in the control group (p < 0.01) and a positive correlation was found between GI and IL1-β (rs = 0.60424, p = 0.00032). CONCLUSIONS Application of chlorhexidine gel reduced inflammation and IL1-β levels in the peri-implant soft tissue.
Collapse
Affiliation(s)
- Thabet Asbi
- Department of Periodontology, Rambam Health Care Campus, Haifa, Israel
| | - Hiba Abu Hussein
- Department of Periodontology, Rambam Health Care Campus, Haifa, Israel
| | - Jacob Horwitz
- Department of Periodontology, Rambam Health Care Campus, Haifa, Israel.,Rappaport Faculty of Medicine, Technion Institute of Technology, Haifa, Israel
| | - Eran Gabay
- Department of Periodontology, Rambam Health Care Campus, Haifa, Israel.,Rappaport Faculty of Medicine, Technion Institute of Technology, Haifa, Israel
| | - Eli E Machtei
- Department of Periodontology, Rambam Health Care Campus, Haifa, Israel.,Rappaport Faculty of Medicine, Technion Institute of Technology, Haifa, Israel
| | - Hadar Zigdon Giladi
- Department of Periodontology, Rambam Health Care Campus, Haifa, Israel.,Rappaport Faculty of Medicine, Technion Institute of Technology, Haifa, Israel
| |
Collapse
|
22
|
One-Piece Titanium Implants: Retrospective Case Series. Case Rep Dent 2021; 2021:6688355. [PMID: 33898069 PMCID: PMC8052180 DOI: 10.1155/2021/6688355] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Revised: 03/17/2021] [Accepted: 03/30/2021] [Indexed: 12/02/2022] Open
Abstract
Purpose One-piece titanium implants are not routinely used for reconstruction after tooth loss. Several limitations seemed to be apparent although the concept provides a straightforward approach for different clinical situations. A clinical documentation of five prosthetic restorations with one-piece titanium implants serving as a relevant treatment option in dental surgery is pursued. We demonstrate the feasibility and benefits of one-piece titanium implants for fixed dental prosthesis. Detailed descriptions of the technical features and the surgical approach by means of clinical cases are given. The prosthetic workflow when working with one-piece titanium implants is depicted in detail as well as examples for implant-supported tooth replacement in the posterior region and the esthetic zone. Conditions of applications regarding different timing of implant placement using the system and its limitations are discussed. Results Clinical cases with a follow-up period of up to 10 years are presented to prove the long-term success of one-piece titanium implants in terms of bone and soft-tissue stability respecting the biological criteria for periodontal health. Conclusions One-piece titanium implants represent a reliable treatment method for single-tooth replacements. Clinical success with long-time bone stability around the implantation site can be achieved. Taken into account the requirements for periodontal tissue stability, uneventful healing without extensive tissue loss is demonstrated by means of clinical cases presenting patients with periodontitis.
Collapse
|
23
|
Kamakshi LNVA, Uppoor AS, Nayak DG, Pralhad S. Evaluation of papilla levels following three different techniques for the second stage of implants - A clinical and radiographic study. J Indian Soc Periodontol 2021; 25:120-127. [PMID: 33888943 PMCID: PMC8041085 DOI: 10.4103/jisp.jisp_60_20] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Revised: 09/24/2020] [Accepted: 10/11/2020] [Indexed: 12/02/2022] Open
Abstract
Objective: Papilla formation after placement of an implant is influenced by the underlying bone and the periodontal biotype. The second-stage surgery to uncover the implants may have an effect on the regeneration of papilla and various techniques such as the scalpel, diode laser, and punch technique are used. In the present study, an attempt has been made to evaluate papillary fill levels following three different techniques of second-stage implant surgery. Materials and Methods: A total of 35 patients with 45 implants (39 single implants and 3 sites with two adjacent implants) were randomly divided into three groups with 15 implants each: second-stage implant surgery with midcrestal incision using scalpel (Group I), with I-shaped incision using scalpel (Group II), and using diode laser (Group III). The mean papillary fill and mean crestal bone loss for all three groups were compared at baseline, 3 months, and 6 months of prosthesis delivery. Results: Complete papilla fill at 6 months was seen in 60% and 73.3% of sites in Group II and Group III, respectively. Bone level contacting implant and adjacent teeth was less in both Groups II and III. Bone level from the contact point to the bone crest was least in Groups II and III. Conclusion: The use of diode laser during second-stage surgery showed maximum papillary fill and minimal crestal bone loss when compared with other two techniques. Irrespective of technique used for second-stage surgery, bone loss did occur after prosthesis delivery.
Collapse
Affiliation(s)
- L N V Alekhya Kamakshi
- Department of Periodontology, Manipal College of Dental Sciences, Mangalore Manipal Academy of Higher Education, Karnataka, India
| | - Ashita S Uppoor
- Department of Periodontology, Manipal College of Dental Sciences, Mangalore Manipal Academy of Higher Education, Karnataka, India
| | - Dilip G Nayak
- Department of Periodontology, Manipal College of Dental Sciences, Mangalore Manipal Academy of Higher Education, Karnataka, India
| | - Swati Pralhad
- Department of Periodontology, Manipal College of Dental Sciences, Mangalore Manipal Academy of Higher Education, Karnataka, India
| |
Collapse
|
24
|
Vág J, Freedman G, Szabó E, Románszky L, Berkei G. Cervical tooth anatomy considerations for prefabricated anatomic healing abutment design: A mathematical formulation. J Prosthet Dent 2021; 127:852-859. [PMID: 33461775 DOI: 10.1016/j.prosdent.2020.11.023] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2020] [Revised: 11/10/2020] [Accepted: 11/10/2020] [Indexed: 10/22/2022]
Abstract
STATEMENT OF PROBLEM A custom emergence profile offers the ideal horizontal dimensions for an anatomic healing abutment. However, developing such an emergence profile can be a time-consuming and complex process. PURPOSE The purpose of this study was to develop a mathematical formula defining horizontal cervical tooth geometry to design prefabricated, tooth-specific, healing abutments. MATERIAL AND METHODS Cone beam computed tomography (CBCT) horizontal cross sections of 989 teeth on 54 participants were measured. For anterior and premolar teeth, 2 perpendicular ellipses were fitted onto the cervical tooth cross section that was defined by 3 parameters. The lingual ellipse followed the lingual outline of the tooth, and its diameter was the largest mesiodistal diameter of the tooth (parameter "a"); its buccolingual radius became parameter "b." The buccal ellipse was perpendicular to the lingual ellipse and followed the buccal outline of the tooth. The buccolingual radius of the smaller ellipse became parameter "c." For molars, the first ellipses followed the mesial outline of the tooth, and its larger diameter (parameter "a") matched the largest buccolingual diameter of the tooth. Its smaller radius became parameter "h1." The second ellipse was parallel to the first ellipse and followed the distal outline of the tooth. Its larger diameter became parameter "b", and its mesiodistal diameter became parameter "h2". Statistical differences between parameters were evaluated by the linear mixed model (α=.05 after Bonferroni adjustment). Pairwise comparisons were made separately for each parameter of the molars and separately for each parameter for the anterior teeth plus premolars. Teeth were put into the same parameter cluster if no significant differences were found between them for a specific parameter. If neither parameter (4 for molars and 3 for the other teeth) was different for 2 teeth, they were put into the same abutment cluster. The abutment clusters determined the type of anatomic healing abutment. The areas were calculated from the developed mathematical formula by using the parameters. In addition, cervical areas of 106 randomly chosen teeth were measured directly with a photo-editing software program. A computer algorithm was used to select 5 CBCT scans from the 54 by using the simple randomization method. The agreement between the 2 methods was evaluated by Bland-Altman analysis. RESULTS The lower and upper limits of agreement between the 2 methods were -8.57 and 7.36 mm2, respectively, with no bias (-0.61 mm2, P=.224). Significant differences were found between most parameters among the 14 tooth types (P<.001). Based on the parameters, 12 specifically distinct clusters were defined. Two tooth types were pooled into 1 abutment cluster: the maxillary first and second premolars and the mandibular first and second molars. CONCLUSIONS The cervical tooth cross section can be accurately defined by combining 2 elliptical elements. A comprehensive array of tooth specific emergence profiles can be provided by just 12 different prefabricated abutments, designed as per the recommended parameters.
Collapse
Affiliation(s)
- János Vág
- Associate Professor, Department of Conservative Dentistry, Faculty of Dentistry, Semmelweis University, Budapest, Hungary.
| | - George Freedman
- Adjunct Professor, Schulich School of Medicine & Dentistry, Western University, Toronto, Canada
| | - Enikő Szabó
- Assistant Professor, Department of Conservative Dentistry, Faculty of Dentistry, Semmelweis University, Budapest, Hungary
| | | | - Gábor Berkei
- Private practice, Helvetic Clinics, Revay Dental Clinic, Budapest, Hungary
| |
Collapse
|
25
|
Abd-Ul-Salam H. Peri-implantitis. INNOVATIVE PERSPECTIVES IN ORAL AND MAXILLOFACIAL SURGERY 2021:47-59. [DOI: 10.1007/978-3-030-75750-2_8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
|
26
|
Borie M, Lecloux G, Bosshardt D, Barrantes A, Haugen HJ, Lambert F, Bacevic M. Peri-implant soft tissue integration in humans - influence of materials: A study protocol for a randomised controlled trial and a pilot study results. Contemp Clin Trials Commun 2020; 19:100643. [PMID: 33083628 PMCID: PMC7554019 DOI: 10.1016/j.conctc.2020.100643] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Revised: 07/15/2020] [Accepted: 08/09/2020] [Indexed: 11/25/2022] Open
Abstract
Background Recently, there has been a growing interest in mucointegration as the formation of an early and long-standing soft tissue barrier seems essential for both the initial healing and long-term implant survival. Aim To develop an experimental method to characterize the mucointegration of different transgingival materials (titanium (Ti), polyetheretherketone (PEEK), polymethylmethacrylate (PMMA), zirconia (Zi), polymer infiltrated ceramic network (PICN), cobalt-chrome (Co–Cr), and lithium disilicate (LD)) in a human model. Methods The study is designed as a multi-part randomized controlled clinical trial. Ninety bone level Straumann implants will randomly receive an experimental, custom-made abutment to allow for the removal of the abutment together with the surrounding soft tissues using a punch biopsy device at 8 weeks of healing (10 per material). The specimens will be further processed for non‐decalcified histology, followed by histomorphometric analysis. The same protocol will be used for additional 90 implants-abutments, but during harvesting, soft tissues will be separated from the abutment and processed for immunohistochemistry in order to study tissue inflammation and vascularization, while the abutments will undergo SEM analysis. Additionally, in vitro analyses, including SEM and profilometry, will be performed in order to characterize surface topography of all experimental materials. Conclusion The limited number of pilot samples presented herein indicate that the use of custom-made abutments in humans is a reproducible method to study peri-implant soft tissue integration. This further intensifies the rationale to compare different abutment materials, used as transgingival components in daily practice, under the same conditions.
Collapse
Affiliation(s)
- Manon Borie
- Department of Periodontology and Oral Surgery, University Hospital of Liège, Belgium
| | - Geoffrey Lecloux
- Department of Periodontology and Oral Surgery, University Hospital of Liège, Belgium
| | - Dieter Bosshardt
- Robert K. Schenk Laboratory of Oral Histology, School of Dental Medicine, University of Bern, Switzerland
| | - Alejandro Barrantes
- Department of Biomaterials, Institute of Clinical Dentistry, Faculty of Dentistry, University of Oslo, Norway
| | - Håvard Jostein Haugen
- Department of Biomaterials, Institute of Clinical Dentistry, Faculty of Dentistry, University of Oslo, Norway
| | - France Lambert
- Dental Biomaterials Research Unit, Faculty of Medicine, University of Liège, Belgium; Department of Periodontology and Oral Surgery, University Hospital of Liège, Belgium
| | - Miljana Bacevic
- Dental Biomaterials Research Unit, Faculty of Medicine, University of Liège, Belgium
| |
Collapse
|
27
|
Gargallo-Albiol J, Tavelli L, Barootchi S, Monje A, Wang HL. Clinical sequelae and patients' perception of dental implant removal: A cross-sectional study. J Periodontol 2020; 92:823-832. [PMID: 32997346 DOI: 10.1002/jper.20-0259] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Revised: 08/18/2020] [Accepted: 08/26/2020] [Indexed: 12/26/2022]
Abstract
BACKGROUND A cross-sectional study was designed to shed light on the clinical sequelae and patient satisfaction after dental implant removal (IR). METHODS Patients undergoing ≥1 IRs were eligible. The reasons for implant failure, clinical and radiological parameters before and after IR, and the surgical and prosthetic treatments offered after IR was assessed. Patient satisfaction was recorded and the Oral Health Impact Profile (OHIP)-14 was used to document patient self-reported dysfunction and discomfort attributed to IR. Lastly, patient expectations after IR were also evaluated. RESULTS Thirty-one patients with 45 implants were analyzed. Peri-implantitis was the main reason for IR (64.5%). The average implant survival time before IR was 120.3 ± 88.2 months. Signs of infection (51.7%) and bleeding on probing (37.5%) were common signs detected at the time of IR. Guided bone regeneration was the intervention most commonly applied simultaneously to IR (74.1%). The reported degree of satisfaction was high, and the overall OHIP-14 score was low. However, a certain patient reluctance to undergo future implant placement in the same clinic or with the same professional was recorded, and a statistically significant increase in adherence to the implant maintenance routine was observed after IR. CONCLUSIONS Peri-implantitis is the leading cause for IR. Guided bone regeneration is commonly applied to attenuate the clinical sequelae of IR. Nonetheless, IR does not seem to affect patients' satisfaction nor their quality of life, though a certain patient reluctance to undergo future implant placement in the same clinic or with the same professional was reported.
Collapse
Affiliation(s)
- Jordi Gargallo-Albiol
- Department of Oral and Maxillofacial Surgery, Universitat Internacional de Catalunya, Barcelona, Spain.,Department of Periodontics and Oral Medicine, School of Dentistry, University of Michigan, Ann Arbor, Michigan, USA
| | - Lorenzo Tavelli
- Department of Periodontics and Oral Medicine, School of Dentistry, University of Michigan, Ann Arbor, Michigan, USA
| | - Shayan Barootchi
- Department of Periodontics and Oral Medicine, School of Dentistry, University of Michigan, Ann Arbor, Michigan, USA
| | - Alberto Monje
- Department of Periodontics and Oral Medicine, School of Dentistry, University of Michigan, Ann Arbor, Michigan, USA.,Department of Periodontics, Universitat Internacional de Catalunya, Barcelona, Spain
| | - Hom-Lay Wang
- Department of Periodontics and Oral Medicine, School of Dentistry, University of Michigan, Ann Arbor, Michigan, USA
| |
Collapse
|
28
|
Cosola S, Marconcini S, Boccuzzi M, Menchini Fabris GB, Covani U, Peñarrocha-Diago M, Peñarrocha-Oltra D. Radiological Outcomes of Bone-Level and Tissue-Level Dental Implants: Systematic Review. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:ijerph17186920. [PMID: 32971869 PMCID: PMC7557536 DOI: 10.3390/ijerph17186920] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Revised: 08/31/2020] [Accepted: 09/09/2020] [Indexed: 12/14/2022]
Abstract
Background: to assess the radiological marginal bone loss between bone-level or tissue-level dental implants through a systematic review of literature until September 2019. Methods: MEDLINE, Embase and other database were searched by two independent authors including only English articles. Results: The search provided 1028 records and, after removing the duplicates through titles and abstracts screening, 45 full-text articles were assessed for eligibility. For qualitative analysis 20 articles were included, 17 articles of them for quantitative analysis counting a total of 1161 patients (mean age 54.4 years) and 2933 implants, 1427 inserted at Tissue-level (TL) and 1506 inserted at Bone-level (BL). The survival rate and the success rate were more than 90%, except for 2 studies with a success rate of 88% and 86.2%. No studies reported any differences between groups in term of success and survival rates. Three studies showed that BL-implants had statistically less marginal bone loss (p < 0.05). Only one study reported statistically less marginal bone loss in TL-implants (p < 0.05). Conclusion: In the most part of the studies, differences between implant types in marginal bone loss were not statistically significant after a variable period of follow-up ranged between 1 and 5 years.
Collapse
Affiliation(s)
- Saverio Cosola
- Oral Surgery Unit, Department of Stomatology, Faculty of Medicine and Dentistry, University of Valencia, 13, 46010 Valencia, Spain; (M.P.-D.); (D.P.-O.)
- Tuscan Stomatologic Institute, via Aurelia, 335, 55041 Lido di Camaiore, Italy; (S.M.); (M.B.); (G.B.M.F.); (U.C.)
- Correspondence:
| | - Simone Marconcini
- Tuscan Stomatologic Institute, via Aurelia, 335, 55041 Lido di Camaiore, Italy; (S.M.); (M.B.); (G.B.M.F.); (U.C.)
| | - Michela Boccuzzi
- Tuscan Stomatologic Institute, via Aurelia, 335, 55041 Lido di Camaiore, Italy; (S.M.); (M.B.); (G.B.M.F.); (U.C.)
| | - Giovanni Battista Menchini Fabris
- Tuscan Stomatologic Institute, via Aurelia, 335, 55041 Lido di Camaiore, Italy; (S.M.); (M.B.); (G.B.M.F.); (U.C.)
- Department of Stomatology, University of Studies Guglielmo Marconi, 44, 00193 Roma, Italy
| | - Ugo Covani
- Tuscan Stomatologic Institute, via Aurelia, 335, 55041 Lido di Camaiore, Italy; (S.M.); (M.B.); (G.B.M.F.); (U.C.)
| | - Miguel Peñarrocha-Diago
- Oral Surgery Unit, Department of Stomatology, Faculty of Medicine and Dentistry, University of Valencia, 13, 46010 Valencia, Spain; (M.P.-D.); (D.P.-O.)
| | - David Peñarrocha-Oltra
- Oral Surgery Unit, Department of Stomatology, Faculty of Medicine and Dentistry, University of Valencia, 13, 46010 Valencia, Spain; (M.P.-D.); (D.P.-O.)
| |
Collapse
|
29
|
Early Loading of Mandibular Molar Single Implants: 1 Year Results of a Randomized Controlled Clinical Trial. MATERIALS 2020; 13:ma13183912. [PMID: 32899723 PMCID: PMC7559124 DOI: 10.3390/ma13183912] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 08/31/2020] [Accepted: 09/02/2020] [Indexed: 12/13/2022]
Abstract
The purpose of this study was to compare the implant survival, peri-implant marginal bone level, and peri-implant soft tissue of three different types of implants. This was performed with an early loading protocol, using a complete digital workflow, for one year of follow-up. Twenty-four patients with a single missing tooth in the mandibular posterior region were randomly assigned to the control group (SLActive Bone level implant; Institut Straumann AG, Basel, Switzerland), experiment group 1 (CMI IS-III Active implant; Neobiotech Co., Seoul, Korea), and experiment group 2 (CMI IS-III HActive implant; Neobiotech Co., Seoul, Korea). For each patient, a single implant was installed using the surgical template, and all prostheses were fabricated using a computer-aided design/computer-aided manufacturing system on a 3-dimensional model. A provisional prosthesis was implanted at 4 weeks, and a definitive monolithic zirconia prosthesis was substituted 12 weeks following the implant placement. The implant stability quotient (ISQ) and peri-implant soft tissue parameters were measured, and periapical radiographs were taken at 1, 3, 4, 8, 12, 24, 36, and 48 weeks after implant placements. Seven implants in the control group, nine implants in the experiment 1 group, and eight implants in the experiment 2 group were analyzed. There were no significant differences among the three groups in terms of insertion torque, ISQ values between surgery and 8 weeks of follow-up, marginal bone loss at 48 weeks of follow-up, and peri-implant soft tissue parameters (P > 0.05). Statistically significant differences in ISQ values were observed between the control and experiment 1 groups, and the control and experiment 2 groups at the 12 to 48 weeks' follow-ups. Within the limits of this prospective study, an early loading protocol can be applied as a predictable treatment modality in posterior mandibular single missing restorations, achieving proper primary stability.
Collapse
|
30
|
Song YW, Yoon SW, Cha JK, Jung UW, Jung RE, Thoma DS. Soft Tissue Dimensions Following Tooth Extraction in the Posterior Maxilla: A Randomized Clinical Trial Comparing Alveolar Ridge Preservation to Spontaneous Healing. J Clin Med 2020; 9:jcm9082583. [PMID: 32784997 PMCID: PMC7464084 DOI: 10.3390/jcm9082583] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Revised: 08/07/2020] [Accepted: 08/07/2020] [Indexed: 12/13/2022] Open
Abstract
Background: To assess the soft tissue dimension following tooth extraction and alveolar ridge preservation in the posterior maxilla compared to spontaneous healing. Methods: Thirty-five patients randomly assigned to alveolar ridge preservation (ARP) and spontaneous healing (SH) after maxillary molar extraction. The crestal, buccal, and palatal gingival thickness at 6 months was measured around virtually placed implant fixtures using superimposed cone-beam computed tomography and intraoral scan taken at 6 months. Buccal mucogingival junction (MGJ) level change over 6 months was estimated using intraoral scans obtained at suture-removal and 6 months. Results: The crestal gingiva was significantly thinner in group ARP (−1.16 mm) compared to group SH (p < 0.05). The buccal and palatal gingiva was significantly thinner at the implant shoulder (IS) level in group ARP (buccal: −0.75 mm; palatal: −0.85 mm) compared to group SH (p < 0.05). The thickness at 2 mm below the IS of both sides and the buccal MGJ level change were similar in both groups (p > 0.05). Conclusions: ARP in the posterior maxilla resulted in a thinner soft tissue on top of and at the prospective level of the implant shoulder at 6 months. The buccal MGJ level changed minimal for 6 months in both groups.
Collapse
Affiliation(s)
- Young Woo Song
- Department of Periodontology, Research Institute for Periodontal Regeneration, Yonsei University College of Dentistry, Seoul 03722, Korea; (Y.W.S.); (S.-W.Y.); (J.-K.C.); (D.S.T.)
| | - Sung-Wook Yoon
- Department of Periodontology, Research Institute for Periodontal Regeneration, Yonsei University College of Dentistry, Seoul 03722, Korea; (Y.W.S.); (S.-W.Y.); (J.-K.C.); (D.S.T.)
| | - Jae-Kook Cha
- Department of Periodontology, Research Institute for Periodontal Regeneration, Yonsei University College of Dentistry, Seoul 03722, Korea; (Y.W.S.); (S.-W.Y.); (J.-K.C.); (D.S.T.)
| | - Ui-Won Jung
- Department of Periodontology, Research Institute for Periodontal Regeneration, Yonsei University College of Dentistry, Seoul 03722, Korea; (Y.W.S.); (S.-W.Y.); (J.-K.C.); (D.S.T.)
- Correspondence: ; Tel.: +82-2-2228318
| | - Ronald E. Jung
- Clinic of Reconstructive Dentistry, Center of Dental Medicine, University of Zurich, 8032 Zurich, Switzerland;
| | - Daniel S. Thoma
- Department of Periodontology, Research Institute for Periodontal Regeneration, Yonsei University College of Dentistry, Seoul 03722, Korea; (Y.W.S.); (S.-W.Y.); (J.-K.C.); (D.S.T.)
- Clinic of Reconstructive Dentistry, Center of Dental Medicine, University of Zurich, 8032 Zurich, Switzerland;
| |
Collapse
|
31
|
A Non-Interventional Study Documenting Use and Success of Tissue Level Implants. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:ijerph17134816. [PMID: 32635445 PMCID: PMC7369857 DOI: 10.3390/ijerph17134816] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Revised: 06/30/2020] [Accepted: 07/02/2020] [Indexed: 12/19/2022]
Abstract
Numerous randomised controlled multicentric studies have investigated various responses to different treatment modalities with dental implants. These studies do not always show the results of daily practice as they are performed under controlled and strict clinical conditions. This multicentric, non-interventionist trial aimed to document the behaviour of implants when used in daily dental practice, without inclusion or exclusion criteria. One hundred and ninety-six screw-shaped, tissue-level implants were placed, and each clinician decided which implant, surgical loading and prosthetic protocol to use. At surgery, data related to the implants were recorded. Additionally, the crestal bone level changes were evaluated for up to two years of follow-up. Two implants were lost before they were loaded. The success rate was 98.31%, and the survival rate was 98.79%. The implant stability quotient (ISQ) at surgery was 68.61 ± 10.35 and at 2 years was 74.39 ± 9.64. The crestal–shoulder distances were 1.25 ± 1.09 mm and 1.68 ± 1.07 mm in the mesial and distal aspects on the day of surgery, respectively, and 2.04 ± 0.91 and 2.16 ± 0.99 mm at 2 years, respectively. At 2 years, 69.3% of the patients were highly satisfied. The use of implants under standard conditions seemed to have success rates similar to their placement in controlled studies.
Collapse
|
32
|
Wang D, Jin J, Qi W, Lin G, Sun P, He F. The two-dimensional size of peri-implant soft tissue in the anterior maxilla and some relevance: A 1- to 7-year cross-sectional study. J Clin Periodontol 2020; 47:509-517. [PMID: 31944341 DOI: 10.1111/jcpe.13256] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2019] [Revised: 12/12/2019] [Accepted: 01/04/2020] [Indexed: 11/29/2022]
Abstract
AIM This study measured the two-dimensional size of soft and hard tissues and analysed some relevance between them. MATERIAL AND METHODS Ninety-six maxillary anterior implants with a follow-up time 1-7 years postoperatively were evaluated. We superimposed the CBCT data of 72 patients with the optical scan data, followed by the measurements of the thickness and the height of soft and bone tissues. The shoulder of the implant was the reference point for all vertical measurements. RESULTS At the level of implant shoulder, the mid-buccal mean thickness of soft tissue was 1.83 ± 0.76 mm, and on the palatal side, it was 4.00 ± 1.22 mm. The mean height of mid-buccal and mid-palatal gingiva was 4.16 ± 1.07 mm and 4.27 ± 1.07 mm. The buccal and palatal vertical bone wall peak was 0.41 ± 0.73 mm and 0.22 ± 0.57 mm coronal to the implant shoulder, and the marginal bone loss was -0.28 ± 0.76 mm and -0.84 ± 1.41 mm. Correlation analysis showed that the soft tissue thickness was negatively correlated with the bone thickness at 0 mm on the buccal side and at 0/2/4 mm on the palatal side apical towards from implant shoulder. The gingival height was significantly positively correlated with bone peak height and marginal bone height. CONCLUSION Soft and hard tissues were basically negatively correlated in the horizontal direction. Sites with little marginal bone loss or high bone peak positively correlated with higher soft tissue levels.
Collapse
Affiliation(s)
- Dandan Wang
- Department of Prosthodontics, The Affiliated Stomatology Hospital, Zhejiang University School of Medicine, Hangzhou, China.,Key Laboratory of Oral Biomedical Research of Zhejiang Province, Zhejiang University School of Stomatology, Hangzhou, China.,The Third Dental Center, Hospital of Stomatology, Xi'an Jiaotong University College of Medicine, Xi'an, China
| | - Jiali Jin
- Department of Prosthodontics, The Affiliated Stomatology Hospital, Zhejiang University School of Medicine, Hangzhou, China.,Key Laboratory of Oral Biomedical Research of Zhejiang Province, Zhejiang University School of Stomatology, Hangzhou, China
| | - Wenting Qi
- Department of Prosthodontics, The Affiliated Stomatology Hospital, Zhejiang University School of Medicine, Hangzhou, China.,Key Laboratory of Oral Biomedical Research of Zhejiang Province, Zhejiang University School of Stomatology, Hangzhou, China
| | - Guofen Lin
- Key Laboratory of Oral Biomedical Research of Zhejiang Province, Zhejiang University School of Stomatology, Hangzhou, China.,Department of General Dentistry, The Affiliated Stomatology Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Ping Sun
- Key Laboratory of Oral Biomedical Research of Zhejiang Province, Zhejiang University School of Stomatology, Hangzhou, China.,Department of General Dentistry, The Affiliated Stomatology Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Fuming He
- Department of Prosthodontics, The Affiliated Stomatology Hospital, Zhejiang University School of Medicine, Hangzhou, China.,Key Laboratory of Oral Biomedical Research of Zhejiang Province, Zhejiang University School of Stomatology, Hangzhou, China
| |
Collapse
|
33
|
Saito H, Aichelmann‐Reidy MB, Oates TW. Advances in implant therapy in North America: Improved outcomes and application in the compromised dentition. Periodontol 2000 2019; 82:225-237. [DOI: 10.1111/prd.12319] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Hanae Saito
- Division of Periodontics Department of Advanced Oral Sciences & Therapeutics University of Maryland School of Dentistry Baltimore Maryland USA
| | - Mary Beth Aichelmann‐Reidy
- Division of Periodontics Department of Advanced Oral Sciences & Therapeutics University of Maryland School of Dentistry Baltimore Maryland USA
| | - Thomas W. Oates
- Department of Advanced Oral Sciences & Therapeutics University of Maryland School of Dentistry Baltimore Maryland USA
| |
Collapse
|
34
|
Wilson JP, Johnson TM. Frequency of adequate mesiodistal space and faciolingual alveolar width for implant placement at anterior tooth positions. J Am Dent Assoc 2019; 150:779-787. [PMID: 31439205 DOI: 10.1016/j.adaj.2019.05.003] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2019] [Revised: 05/02/2019] [Accepted: 05/03/2019] [Indexed: 11/19/2022]
Abstract
BACKGROUND Prior studies have defined minimum mesiodistal space (MS) and faciolingual alveolar width (FAW) requirements for dental implant sites, and failure to observe these constraints may adversely impact peri-implant health and esthetics. However, to the authors' knowledge, no previous reports have established frequencies at which anterior tooth positions present favorable MS and FAW for implant accommodation. METHODS A single examiner analyzed 205 cone-beam computed tomographic images, recording MS and FAW available for implant placement at anterior tooth positions. The examiner compared measurements with standardized implant diameters to assess anticipated implant-to-tooth distances and peri-implant bone thicknesses. RESULTS In the esthetic zone, lateral incisor sites most frequently failed to present favorable MS. At maxillary lateral incisor positions, 22% (left) and 27% (right) of sites offered less than 2 millimeters between the proposed implant platform and the adjacent teeth. In mandibular incisor positions, implant-to-tooth distance was less than 2 mm at 79% through 97% of sites and less than 1.5 mm at 35% through 76% of sites. Over one-half of maxillary incisor sites and 78% through 95% of mandibular incisor sites exhibited FAW of less than 4 mm beyond implant diameter. CONCLUSIONS In the population evaluated, mandibular incisor positions frequently presented unfavorable MS to accommodate conventional narrow-diameter implants. In addition, considerable proportions of mandibular incisor and maxillary lateral incisor sites may be at risk of developing unfavorable peri-implant bone thickness when conventional narrow-diameter implants are used. PRACTICAL IMPLICATIONS Practitioners should consider small-diameter implants and nonimplant tooth replacement methods for many patients missing single mandibular incisors or maxillary lateral incisors.
Collapse
|
35
|
LEELANARATHIWAT K, MINATO K, KATSUTA Y, OTSUKA Y, KATSURAGI H, WATANABE F. Cytotoxicity of hydroxyapatite-tyrosine complex with gray titania coating on titanium alloy surface to L929 mouse fibroblasts. Dent Mater J 2019; 38:573-578. [DOI: 10.4012/dmj.2018-296] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Kanda LEELANARATHIWAT
- Functional Occlusal Treatment, The Nippon Dental University Graduate School of Life Dentistry at Niigata
| | - Kentaro MINATO
- Functional Occlusal Treatment, The Nippon Dental University Graduate School of Life Dentistry at Niigata
| | - Yasuhiro KATSUTA
- Department of Crown & Bridge Prosthodontics, The Nippon Dental University School of Life Dentistry at Niigata
| | - Yuichi OTSUKA
- Department of System Safety, Nagaoka University of Technology
| | - Hiroaki KATSURAGI
- Department of Oral Microbiology, The Nippon Dental University School of Life Dentistry at Niigata
| | - Fumihiko WATANABE
- Functional Occlusal Treatment, The Nippon Dental University Graduate School of Life Dentistry at Niigata
- Department of Crown & Bridge Prosthodontics, The Nippon Dental University School of Life Dentistry at Niigata
| |
Collapse
|
36
|
Ko KA, Kim S, Choi SH, Lee JS. Randomized controlled clinical trial on calcium phosphate coated and conventional SLA surface implants: 1-year study on survival rate and marginal bone level. Clin Implant Dent Relat Res 2019; 21:995-1001. [PMID: 31317669 DOI: 10.1111/cid.12823] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2019] [Revised: 06/12/2019] [Accepted: 07/04/2019] [Indexed: 12/16/2022]
Abstract
BACKGROUND Calcium phosphate (CaP)-coated surface showed enhanced contact osteogenesis around dental implant and finally accelerate osseointegration in early healing phase. PURPOSE The aim of this randomized controlled trial was to compare the peri-implant marginal bone level around uncoated and CaP-coated sandblasted, large-grit, acid-etched (SLA) surface implants during the first year after placement. MATERIALS AND METHODS This study was performed upon 34 patients with randomized and double-blinded design. Clinical and radiographic examinations were performed immediately after implant placement, at re-entry after 3 months, and after 12 months to evaluate the initial stability and change in the marginal bone level. The distance from the implant shoulder to the top of the bone-to-implant contact was defined as the marginal bone level, and its alteration was measured at 1 year after implant installation. RESULTS None of the implants failed, and most of them showed a marginal bone loss of less than 1 mm. Small changes in the bone level were noted at all sites in the control and test groups, and there were no clinically significant differences in the changes in the marginal bone. CONCLUSION Both CaP-coated and uncoated SLA surface implants showed comparably successful marginal bone stability without any complications during the first year after placement.
Collapse
Affiliation(s)
- Kyung-A Ko
- Department of Periodontology, Research Institute of Periodontal Regeneration, College of Dentistry, Yonsei University, Seoul, Republic of Korea
| | - Seungmin Kim
- Department of Periodontology, Research Institute of Periodontal Regeneration, College of Dentistry, Yonsei University, Seoul, Republic of Korea
| | - Seong-Ho Choi
- Department of Periodontology, Research Institute of Periodontal Regeneration, College of Dentistry, Yonsei University, Seoul, Republic of Korea
| | - Jung-Seok Lee
- Department of Periodontology, Research Institute of Periodontal Regeneration, College of Dentistry, Yonsei University, Seoul, Republic of Korea
| |
Collapse
|
37
|
Kim JC, Lee J, Kim S, Koo KT, Kim HY, Yeo ISL. Influence of implant-abutment connection structure on peri-implant bone level in a second molar: A 1-year randomized controlled trial. J Adv Prosthodont 2019; 11:147-154. [PMID: 31297173 PMCID: PMC6609760 DOI: 10.4047/jap.2019.11.3.147] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2018] [Revised: 04/30/2019] [Accepted: 06/11/2019] [Indexed: 11/12/2022] Open
Abstract
PURPOSE This study aimed to evaluate the effect of two different implant-abutment connection structures with identical implant design on peri-implant bone level. MATERIALS AND METHODS This clinical study was a patient-blind randomized controlled trial following the CONSORT 2010 checklists. This trial was conducted in 24 patients recruited between March 2013 and July 2015. Implants with internal friction connection were compared to those with external hex connection. One implant for each patient was installed, replacing the second molar. Implant-supported crowns were delivered at four months after implant insertion. Standardized periapical radiographs were taken at prosthesis delivery (baseline), and one year after delivery. On the radiographs, distance from implant shoulder to first bone-to-implant contact (DIB) and peri-implant area were measured, which were the primary and secondary outcome, respectively. RESULTS Eleven external and eleven internal implants were analyzed. Mean changes of DIB from baseline to 1-year postloading were 0.59 (0.95) mm for the external and 0.01 (0.68) mm for the internal connection. Although no significant differences were found between the two groups, medium effect size was found in DIB between the connections (Cohen's d = 0.67). CONCLUSION Considering the effect size in DIB, this study suggested the possibility of the internal friction connection structure for more effective preservation of marginal bone.
Collapse
Affiliation(s)
- Jin-Cheol Kim
- Department of Prosthodontics, School of Dentistry and Dental Research Institute, Seoul National University, Seoul, Republic of Korea
| | - Jungwon Lee
- Department of Periodontology, Seoul National University Dental Hospital, Seoul, Republic of Korea
| | - Sungtae Kim
- Department of Periodontology, Seoul National University School of Dentistry, Seoul, Republic of Korea
| | - Ki-Tae Koo
- Department of Periodontology, Seoul National University School of Dentistry, Seoul, Republic of Korea
| | - Hae-Young Kim
- Department of Health Policy and Management, College of Health Science, Korea University, Seoul, Republic of Korea
| | - In-Sung Luke Yeo
- Department of Prosthodontics, School of Dentistry and Dental Research Institute, Seoul National University, Seoul, Republic of Korea
| |
Collapse
|
38
|
Al-Sabbagh M, Xenoudi P, Al-Shaikhli F, Eldomiaty W, Hanafy A. Does Peri-Implant Mucosa Have a Prognostic Value? Dent Clin North Am 2019; 63:567-580. [PMID: 31097145 DOI: 10.1016/j.cden.2019.02.015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
The need for keratinized tissue around implants remains a controversial topic. However, reconstruction of keratinized mucosa may be needed to facilitate restorative procedures, improve aesthetics, and control plaque during oral hygiene. Free gingival grafts, connective tissue grafts, allogenic/xenograft materials, and apically positioned flaps have been used to augment soft tissue around implants. Four different timing protocols have been explored with regard to soft-tissue augmentation: before and during implant placement, during the second-stage surgery, or after restoration. The timing and technique of soft-tissue augmentation remain controversial and lack support from literature. Long-term clinical studies to establish clear guidelines are warranted.
Collapse
Affiliation(s)
- Mohanad Al-Sabbagh
- Division of Periodontology, Department of Oral Health Practice, University of Kentucky College of Dentistry, D-438 Chandler Medical Center, 800 Rose Street, Lexington, KY 40536-0927, USA.
| | - Pinelopi Xenoudi
- Division of Periodontology, Department of Orofacial Sciences, University of California, San Francisco, School of Dentistry, 707 Parnassus Ave, San Francisco, CA 94143, USA
| | - Fatimah Al-Shaikhli
- Division of Periodontology, Department of Oral Health Practice, College of Dentistry, University of Kentucky, 800 Rose Street, Lexington, KY 40536-7001, USA
| | - Walied Eldomiaty
- Division of Periodontology, Department of Oral Health Practice, College of Dentistry, University of Kentucky, 800 Rose Street, Lexington, KY 40536-7001, USA
| | - Ahmed Hanafy
- Department of Periodontology, School of Dental Medicine, British University in Egypt, Suez Desert Road, P.O. Box 43, El Sherouk City, Cairo 11837, Egypt
| |
Collapse
|
39
|
Roehling S, Schlegel KA, Woelfler H, Gahlert M. Zirconia compared to titanium dental implants in preclinical studies—A systematic review and meta‐analysis. Clin Oral Implants Res 2019; 30:365-395. [DOI: 10.1111/clr.13425] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2018] [Revised: 02/27/2019] [Accepted: 03/12/2019] [Indexed: 12/22/2022]
Affiliation(s)
- Stefan Roehling
- Clinic for Oral and Cranio‐Maxillofacial Surgery Hightech Research Center University Hospital Basel University of Basel Basel Switzerland
- Clinic for Oral and Cranio‐Maxillofacial Surgery Kantonsspital Aarau Aarau Switzerland
- Unit for Oral & Maxillofacial Surgery Medical Healthcare Center Lörrach Lörrach Germany
| | - Karl A. Schlegel
- Private Clinic for Oral and Maxillofacial Surgery Prof. Schlegel Munich Germany
- Maxillofacial Surgery Department University Hospital Erlangen University of Erlangen Erlangen Germany
| | | | - Michael Gahlert
- Clinic for Oral and Cranio‐Maxillofacial Surgery Hightech Research Center University Hospital Basel University of Basel Basel Switzerland
- Dental Clinic for Oral Surgery and Implant Dentistry Prof. Gahlert Munich Germany
- Department for Oral Surgery Faculty of Medicine Sigmund Freud University Vienna Vienna Austria
| |
Collapse
|
40
|
Seo GY, Thoma DS, Jung UW, Lee JS. Increasing the tissue thickness at implant sites using guided bone regeneration and an additional collagen matrix: Histologic observations in beagle dogs. J Biomed Mater Res B Appl Biomater 2019; 107:741-749. [PMID: 30080303 DOI: 10.1002/jbm.b.34168] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2017] [Revised: 04/01/2018] [Accepted: 05/08/2018] [Indexed: 11/06/2022]
Abstract
OBJECTIVES To histologically determine the alteration in horizontal mucosal thickness at sites that received guided bone regeneration (GBR) with additional use of collagen matrix and to assess whether bone formation is affected by adding collagen matrix at GBR sites at 8 weeks of healing. MATERIALS AND METHODS Eight weeks after bilateral extraction of maxillary premolars, standardized defects were created on buccal side of edentulous ridges in four beagle dogs. One side was randomly allocated as control (biphasic calcium phosphate plus collagen membrane; GBR only), while contralateral side was allocated as test (biphasic calcium phosphate plus collagen membrane plus an additional layer of collagen matrix). Histologic observations, histomorphometric and micro-computed tomography analyses were performed after 8 weeks. RESULTS Membrane complex comprising residual collagen membrane and adjacent dense connective tissue was observed at both control and test sites. The thickness in the histologic analysis were 1.69 ± 0.23 mm (control) and 1.76 ± 0.07 mm (test) in histologic analysis and were 2.03 ± 0.26 mm (control) and 2.14 ± 0.24 mm (test) in radiographic analysis. The thickness of the membrane complex in soft-tissue layer were 723.0 ± 241.6 μm (control) and 984.6 ± 334.4 μm (test). The percentage of new bone formation were 22.30 ± 5.92% (control) and 25.50 ± 8.08% (test). All measured outcome did not show significant differences between control and test groups. CONCLUSION The addition of collagen matrix on top of standard GBR procedure did not increase the soft tissue thickness and dense connective tissue formation at 8 weeks of healing. Bone regeneration was not affected by the addition of collagen matrix. © 2018 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater 107B: 741-749, 2019.
Collapse
Affiliation(s)
- Gi-Young Seo
- Department of Periodontology, Research Institute for Periodontal Regeneration, College of Dentistry, Yonsei University, Seoul, Republic of Korea
| | - Daniel Stefan Thoma
- Clinic of Fixed and Removable Prosthodontics and Dental Material Science, Center for Dental Medicine, University of Zurich, Switzerland
| | - Ui-Won Jung
- Department of Periodontology, Research Institute for Periodontal Regeneration, College of Dentistry, Yonsei University, Seoul, Republic of Korea
| | - Jung-Seok Lee
- Department of Periodontology, Research Institute for Periodontal Regeneration, College of Dentistry, Yonsei University, Seoul, Republic of Korea
| |
Collapse
|
41
|
The impact of implant abutment surface treatment with TiO 2 on peri-implant levels of angiogenesis and bone-related markers: a randomized clinical trial. Int J Oral Maxillofac Surg 2019; 48:962-970. [PMID: 30661944 DOI: 10.1016/j.ijom.2018.12.012] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2018] [Revised: 10/09/2018] [Accepted: 12/19/2018] [Indexed: 12/26/2022]
Abstract
The goal of this randomized, blinded, split-mouth controlled clinical trial was to assess the influence of abutment surface treatment on tissue healing. Fifteen patients received two implants distributed randomly to two groups: test (TiO2 abutment surface), control (standard abutment surface). Levels of epidermal growth factor (EGF), bone morphogenetic protein 9 (BMP-9), endothelin 1 (ET-1), fibroblast growth factor (FGF), placental growth factor (PlGF), and vascular endothelial growth factor (VEGF) were quantified in the peri-implant fluid after 3, 14, 30, and 60 days. Inter-group comparisons indicated higher levels of EGF, BMP-9, ET-1, FGF, and PlGF in the test group after 30days (P<0.05). PlGF levels were also higher in the test group after 60 days. In the test group, intra-group analysis revealed different levels of ET-1 and FGF between days 3 and 30, and days 3 and 60 (P<0.05); furthermore, VEGF levels were significantly higher on day 60 than on day 3 (P <0.05). In the control group, intra-group analysis demonstrated significantly different levels of ET-1, FGF, and PlGF between days 3 and 60 and of PlGF between days 14 and 60 (P<0.05). In conclusion, abutment surfaces treated with TiO2 influenced the levels of angiogenesis and bone-related markers.
Collapse
|
42
|
Zhu B, Meng H, Huang B, Chen Z, Lu R. Detection of T. forsythia and other important bacteria in crestal and subcrestal implants with ligature-induced peri-implant infection in dogs. J Periodontol 2018; 90:306-313. [PMID: 30222195 DOI: 10.1002/jper.18-0223] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2018] [Revised: 07/07/2018] [Accepted: 07/31/2018] [Indexed: 11/08/2022]
Abstract
BACKGROUND The study was designed to compare peri-implant microbial colonization of inflamed implants placed at different levels in dogs. METHODS Two screwed-in (SI) and two tapped-in (TI) conical connection implants were placed on each side of mandibles in six dogs respectively. Four experimental groups were constituted according to implant types and placement depth in one side: SI crestally (SIC), SI 1.5 mm subcrestally (SIS), TI crestally (TIC), and TI 1.5 mm subcrestally (TIS). Plaque accumulation of implants was promoted by cotton ligatures at either side randomly selected in each dog four weeks after abutment connection. Peri-implant sulcular fluid (PISF) samples were collected at 4 weeks, 10 weeks, and 16 weeks after abutment connection. Common periodontal pathogens in PISF were analyzed by PCR and realtime-PCR to investigate the influence of placement depth on microbial accumulation. The microbial results were further correlated with clinical parameters. RESULTS At ligatured sides, detection rates of T. forsythia and P. gingivalis increased significantly in four groups. T. forsythia levels increased significantly from baseline in four groups at ligatured sides at 16 weeks (p < 0.05). TIS group harbored significantly more T. forsythia than TIC at ligatured sides at 16 weeks (p < 0.05). At ligatured sides, probing depth was correlated to T. forsythia level in four groups as well as in total. CONCLUSIONS Subcrestal placement could increase the peri-implant T. forsythia level at the early stage of peri-implantitis. The T. forsythia level in the peri-implant sulcus is associated with probing depth.
Collapse
Affiliation(s)
- Bin Zhu
- Department of Periodontology, Peking University School and Hospital of Stomatology, Beijing, China
| | - Huanxin Meng
- Department of Periodontology, Peking University School and Hospital of Stomatology, Beijing, China
| | - Baoxin Huang
- Department of Periodontology, Peking University School and Hospital of Stomatology, Beijing, China.,Department of Oral Implantology, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - ZhiBin Chen
- Department of Periodontology, Peking University School and Hospital of Stomatology, Beijing, China
| | - Ruifang Lu
- Department of Periodontology, Peking University School and Hospital of Stomatology, Beijing, China
| |
Collapse
|
43
|
Effect of Different Morphology of Titanium Surface on the Bone Healing in Defects Filled Only with Blood Clot: A New Animal Study Design. BIOMED RESEARCH INTERNATIONAL 2018; 2018:4265474. [PMID: 30175131 PMCID: PMC6106843 DOI: 10.1155/2018/4265474] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/24/2018] [Accepted: 05/22/2018] [Indexed: 12/25/2022]
Abstract
Background The objective of the present histologic animal study was to analyze whether roughness of the titanium surface can influence and/or stimulate the bone growth in defects filled with the blood using a rabbit tibia model. Materials and Methods Forty sets (implant and abutment), dental implant (3.5 mm in diameter and 7 mm in length) plus healing abutment (2.5 mm in diameter), were inserted in the tibiae of 10 rabbits. Moreover, twenty titanium discs were prepared. The abutment and discs were treated by 4 different methods and divided into 4 groups: (group A) machined abutments (smooth); (group B) double acid etching treatment; (group C) treatment with blasting with particles of aluminum oxide blasted plus acid conditioning; (group D) treatment with thorough blasting with particles of titanium oxide plus acid conditioning. The discs were used to characterize the surfaces by a profilometer and scanning electronic microscopy. Results After 8 weeks, the new bone formation around the sets of the samples was analyzed qualitatively and quantitatively in relation to bone height from the base of the implant and presence of osteocytes. Group C (1.50±0.20 mm) and group D (1.62±0.18 mm) showed bone growth on the abutment with higher values compared to group A (0.94±0.30 mm) and group B (1.19±0.23 mm), with significant difference between the groups (P < 0.05). In addition, osteocyte presence was higher in groups with surface treatment related to machined (P < 0.05). Conclusions Within the limitations of the present study, it was possible to observe that there is a direct relationship between the roughness present on the titanium surface and the stimulus for bone formation, since the presence of larger amounts of osteocytes on SLA surfaces evidenced this fact. Furthermore, the increased formation of bone tissue in height demonstrates that there is an important difference between the physical and chemical methods used for surface treatment.
Collapse
|
44
|
Liu JZ. [The modified lip-tooth-ridge classification: a guide for edentulous maxillary arches]. HUA XI KOU QIANG YI XUE ZA ZHI = HUAXI KOUQIANG YIXUE ZAZHI = WEST CHINA JOURNAL OF STOMATOLOGY 2018; 36:233-239. [PMID: 29984920 DOI: 10.7518/hxkq.2018.03.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
According to the width and height of the maxillary alveolar ridge, the maxillary edentulous jaws can be divided into three categories by using modified lip-tooth-ridge (MLTR) classification. Class Ⅰ is characterized by sufficient bone available for implants in the vertical and horizontal aspects and is suitable for fixed implant-supported prostheses. Class Ⅱ is characterized by sufficient bone amount available for implants in a horizontal aspect but insufficient for lip support and is suitable for a fixed detachable implant-supported prosthesis. Class Ⅲ is characterized by inadequate amount of bone for implants (with vertical or horizontal components) and is suitable for the use of zygomatic implants or traditional complete denture. Patients belonging to Class Ⅰ can be further classified into two sub-categories according to the height of the alveolar ridge. The first subclass is characterized by minimal bone deficiency and is suitable for a conventional implant-supported "crown and bridge" prosthesis. The second subclass is characterized by a larger vertical deficiency than that of the first subclass and is suitable for implant-supported hybrid prosthesis. The MLTR classification system can help the dentist to determine whether the patient is suitable for implanting dentures and whether fixed denture or removable denture is appropriate for the patient, select indications, reduce complications, and achieve long-term results.
Collapse
Affiliation(s)
- Jian-Zhang Liu
- Dept. of Prosthodontics, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology , Beijing 100081, China
| |
Collapse
|
45
|
Calvo-Guirado JL, López-López PJ, Pérez-Albacete Martínez C, Javed F, Granero-Marín JM, Maté Sánchez de Val JE, Ramírez Fernández MP. Peri-implant bone loss clinical and radiographic evaluation around rough neck and microthread implants: a 5-year study. Clin Oral Implants Res 2018; 29:635-643. [PMID: 26744262 DOI: 10.1111/clr.12775] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/14/2015] [Indexed: 12/16/2022]
Abstract
OBJECTIVE To evaluate marginal bone loss over 5 years around microthreaded implants placed in the maxillary anterior/esthetic zone and immediate restored with non-occlusal loading. MATERIALS AND METHODS Seventy-one implants (with microthreads up to the platform-rough surface body and neck, internal connection and platform switching) were placed in healed bone in the maxillary arches of 30 men and 23 women (mean age 37.85 ± 7.09 years, range 27-60). All subjects had at least 3 mm of soft tissue to allow the establishment of adequate biologic width and to reduce bone resorption. Each patient received a provisional restoration immediately after implant placement with slight occlusal contact. Mesial and distal bone height was evaluated using digital radiography on the day following implant placement (baseline) and after 1, 2, 3, 4 and 5 years. Primary stability was measured with resonance frequency analysis. RESULTS No implants failed, resulting in a cumulative survival rate of 100% after 3 years. Marginal bone loss from implant collar to bone crest measured at baseline (peri-implant bone defect at the fresh extraction socket) and after 5 years was 0.90 mm ± 0.26 mm. Mesial and distal site crestal bone loss ranged from 3.42 ± 1.2 mm at baseline to 3.51 ± 1.5 mm after 5 years and from 3.38 ± 0.9 mm at baseline to 3.49 ± 0.9 mm after 5 years, respectively (P = 0.086). CONCLUSIONS The results of this study showed limited implant crestal bone loss 0.90 mm ± 0.26 mm and 100% of implant survival rate at 5-year follow-up of immediate restored implants with rough surface neck and microthreads.
Collapse
Affiliation(s)
- José Luis Calvo-Guirado
- International Dentistry Research Cathedra, Universidad Católica San Antonio de Murcia (UCAM), Murcia, Spain
| | - Patricia J López-López
- International Dentistry Research Cathedra, Universidad Católica San Antonio de Murcia (UCAM), Murcia, Spain
| | | | - Fawad Javed
- Division of General Dentistry, Eastman Institute for Oral Health, University of Rochester, Rochester, NY, USA
| | - José Manuel Granero-Marín
- International Dentistry Research Cathedra, Universidad Católica San Antonio de Murcia (UCAM), Murcia, Spain
| | | | | |
Collapse
|
46
|
Kushaldeep, Tandan A, Upadhyaya V, Raghuvanshi M. Comparative evaluation of the influence of immediate versus delayed loading protocols of dental implants: A radiographic and clinical study. J Indian Prosthodont Soc 2018; 18:131-138. [PMID: 29692566 PMCID: PMC5903176 DOI: 10.4103/jips.jips_127_17] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2017] [Accepted: 02/14/2018] [Indexed: 11/16/2022] Open
Abstract
Aim: Immediate loading protocol, in recent times, has gained popularity as it has not only shortened the treatment time but also resulted in enhanced patient satisfaction. The aim of this study was to evaluate and compare the effectiveness of immediate implant loading protocol over conventional implant loading protocol with respect to peri-implant bone loss. Materials and Methods: Twenty patients selected for this study were divided into two groups. In Group I patients, implants were immediately loaded, whereas in Group II, they were loaded with conventional loading protocol. Peri-implant bone loss was measured and compared using intraoral periapical radiographs with the grid at the time of implant loading, 1, 3, and 6 months after implant loading. Results: Change in radiographic bone loss in both the groups was found to be statistically significant when baseline was compared to 1, 3, and 6 months, but the difference in the bone loss between Group I and II was not found to be statistically significant. Conclusion: No statistically significant difference was observed in the crestal bone loss on comparison of immediate loading to delayed loading protocol. Clinical Significance: After achieving good primary stability, immediate-loaded implants can be used for the benefit of the patients as it reduces the period of edentulism.
Collapse
Affiliation(s)
- Kushaldeep
- Department of Prosthodontics, Private Practice, Delhi, India.,Department of Prosthodontics, BBDCODS, Lucknow, Uttar Pradesh, India
| | - Amrit Tandan
- Department of Prosthodontics, BBDCODS, Lucknow, Uttar Pradesh, India
| | - Viram Upadhyaya
- Department of Prosthodontics, DAV (C) Dental College Dental College, Yamuna Nagar, Haryana, India
| | - Mohit Raghuvanshi
- Department of Prosthodontics, BBDCODS, Lucknow, Uttar Pradesh, India
| |
Collapse
|
47
|
Monje A, Caballé-Serrano J, Nart J, Peñarrocha D, Wang HL, Rakic M. Diagnostic accuracy of clinical parameters to monitor peri-implant conditions: A matched case-control study. J Periodontol 2018; 89:407-417. [DOI: 10.1002/jper.17-0454] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2017] [Revised: 09/19/2017] [Accepted: 10/20/2017] [Indexed: 01/28/2023]
Affiliation(s)
- Alberto Monje
- Department of Periodontics and Oral Medicine; University of Michigan School of Dentistry; Ann Arbor MI
- Department of Oral Surgery and Stomatology; ZMK School of Dentistry; Bern CH
- Department of Periodontology; Universitat Internacional de Catalunya; Barcelona Spain
| | - Jordi Caballé-Serrano
- Department of Oral and Maxillofacial Surgery; Universitat Internacional de Catalunya; Barcelona Spain
| | - Jose Nart
- Department of Periodontology; Universitat Internacional de Catalunya; Barcelona Spain
| | - David Peñarrocha
- Department of Oral Surgery; Universitat de Valencia; Valencia Spain
| | - Hom-Lay Wang
- Department of Periodontics and Oral Medicine; University of Michigan School of Dentistry; Ann Arbor MI
| | - Mia Rakic
- INSERM UMR-1229 RMeS; Faculty of Dental Surgery; University of Nantes; Nantes France
- Institute for Biological Research “Sinisa Stankovic”; University of Belgrade; Belgrade Serbia
| |
Collapse
|
48
|
Blanco J, Pico A, Caneiro L, Nóvoa L, Batalla P, Martín-Lancharro P. Effect of abutment height on interproximal implant bone level in the early healing: A randomized clinical trial. Clin Oral Implants Res 2017; 29:108-117. [DOI: 10.1111/clr.13108] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/28/2017] [Indexed: 12/31/2022]
Affiliation(s)
- Juan Blanco
- Periodontology Unit; School of Medicine and Dentistry; University of Santiago de Compostela; Santiago de Compostela Spain
- Odontología Médico-Quirúrgica (OMEQUI) Research Group; Health Research Institute of Santiago de Compostela (IDIS); Santiago de Compostela Spain
| | - Alexandre Pico
- Periodontology Unit; School of Medicine and Dentistry; University of Santiago de Compostela; Santiago de Compostela Spain
| | - Leticia Caneiro
- Periodontology Unit; School of Medicine and Dentistry; University of Santiago de Compostela; Santiago de Compostela Spain
| | - Lourdes Nóvoa
- Periodontology Unit; School of Medicine and Dentistry; University of Santiago de Compostela; Santiago de Compostela Spain
| | - Pilar Batalla
- Periodontology Unit; School of Medicine and Dentistry; University of Santiago de Compostela; Santiago de Compostela Spain
| | | |
Collapse
|
49
|
Melo LAD, Souza MBCD, Barbosa GAS, Carreiro ADFP. Peri-Implant Bone Loss of External Hexagon and Morse Taper in Patients Wearing Immediately Loaded Overdentures. Braz Dent J 2017; 28:694-698. [PMID: 29211123 DOI: 10.1590/0103-6440201701577] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2017] [Accepted: 07/27/2017] [Indexed: 11/21/2022] Open
Abstract
The aim of this study was to evaluate the peri-implant bone loss of External Hexagon (EH) and Morse Taper (MT) implants in patients wearing immediately loaded mandibular overdentures during a 1-year follow-up. This is a non-randomized controlled clinical trial including 18 MT and 22 EH implants. Periapical radiographs were taken after overdentures insertion and following 1 year. The peri-implant bone loss was assessed through digitalization and analysis of the radiographs in the software Corel DRAW X7. For this, measurement from implant platform to residual ridge at mesial and distal surfaces of each implant was conducted. The results showed high success rate in the groups EH (100%) and MT (94.4%). For peri-implant bone levels, it was found significant difference between the groups (p=0.032) and greater bone loss was observed in the group EH. In general, bone loss was 0.85mm (±0.82) for EH and 0.10mm (±1.0) for MT. It was concluded that greater bone loss occurred in the group EH in comparison to the group MT after a 1-year follow-up.
Collapse
Affiliation(s)
- Laércio Almeida de Melo
- Department of Dentistry, UFRN - Universidade Federal do Rio Grande do Norte, Natal, RN, Brazil
| | | | | | | |
Collapse
|
50
|
Wang QQ, Dai R, Cao CY, Fang H, Han M, Li QL. One-time versus repeated abutment connection for platform-switched implant: A systematic review and meta-analysis. PLoS One 2017; 12:e0186385. [PMID: 29049323 PMCID: PMC5648164 DOI: 10.1371/journal.pone.0186385] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2017] [Accepted: 09/30/2017] [Indexed: 11/25/2022] Open
Abstract
Objective This review aims to compare peri-implant tissue changes in terms of clinical and radiographic aspects of implant restoration protocol using one-time abutment to repeated abutment connection in platform switched implant. Method A structured search strategy was applied to three electronic databases, namely, Pubmed, Embase and Web of Science. Eight eligible studies, including seven randomised controlled studies and one controlled clinical study, were identified in accordance with inclusion/exclusion criteria. Outcome measures included peri-implant bone changes (mm), peri-implant soft tissue changes (mm), probing depth (mm) and postsurgical complications. Result Six studies were pooled for meta-analysis on bone tissue, three for soft tissue, two for probing depth and four for postsurgical complications. A total of 197 implants were placed in one-time abutment group, whereas 214 implants were included in repeated abutment group. The implant systems included Global implants, Ankylos, JDEvolution (JdentalCare), Straumann Bone level and Conelog-Screwline. One-time abutment group showed significantly better outcomes than repeated abutment group, as measured in the standardised differences in mean values (fixed- and random-effect model): vertical bone change (0.41, 3.23) in 6 months, (1.51, 14.81) in 12 months and (2.47, 2.47) in 3 years and soft tissue change (0.21, 0.23). No significant difference was observed in terms of probing depth and complications. Conclusion Our meta-analysis revealed that implant restoration protocol using one-time abutment is superior to repeated abutment for platform switched implant because of less bone resorption and soft tissue shifts in former. However, future randomised clinical trials should be conducted to further confirm these findings because of the small samples and the limited quality of the original research.
Collapse
Affiliation(s)
- Qing-qing Wang
- College &Hospital of Stomatology, Key Laboratory of Oral Diseases Research of Anhui Province, Anhui Medical University, Hefei, China
| | - Ruoxi Dai
- College &Hospital of Stomatology, Key Laboratory of Oral Diseases Research of Anhui Province, Anhui Medical University, Hefei, China
| | - Chris Ying Cao
- College &Hospital of Stomatology, Key Laboratory of Oral Diseases Research of Anhui Province, Anhui Medical University, Hefei, China
| | - Hui Fang
- College &Hospital of Stomatology, Key Laboratory of Oral Diseases Research of Anhui Province, Anhui Medical University, Hefei, China
| | - Min Han
- College &Hospital of Stomatology, Key Laboratory of Oral Diseases Research of Anhui Province, Anhui Medical University, Hefei, China
| | - Quan-Li Li
- College &Hospital of Stomatology, Key Laboratory of Oral Diseases Research of Anhui Province, Anhui Medical University, Hefei, China
- * E-mail:
| |
Collapse
|