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Aparicio C, Polido WD, Chehade A, Shenouda M, Simon M, Simon P, Al-Nawas B. Round and flat zygomatic implants: effectiveness after a 3‑year follow‑up non‑interventional study. Int J Implant Dent 2024; 10:30. [PMID: 38856876 PMCID: PMC11164844 DOI: 10.1186/s40729-024-00548-9] [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: 02/26/2024] [Accepted: 05/21/2024] [Indexed: 06/11/2024] Open
Abstract
PURPOSE This non-interventional study investigates variations in the type and frequency of late complications linked to novel zygomatic implant designs, installed adhering to the Zygoma Anatomy-Guided Approach (ZAGA) concept, over an extended follow-up period of at least 3 years. METHODS Consecutive patients presenting indications for treatment with ZIs were treated according to ZAGA recommendations. Implants were immediately loaded. The ORIS success criteria for prosthetic offset, stability, sinus changes and soft-tissue status were used to evaluate the outcome. RESULTS Twenty patients were treated. Ten patients received two ZIs and regular implants; one received three ZIs plus regular implants, and nine received four ZIs. Fifty-nine ZIs were placed: thirty-six (61%) Straumann ZAGA-Flat implants and twenty-three (39%) Straumann ZAGA-Round implants. Four patients (20%) presented earlier sinus floor discontinuities. Fifteen patients (75%) had prior sinus opacities. Nineteen patients were followed for between 38 and 53 months (mean 46.5 months). One patient dropped out after 20 months. When comparing pre-surgical CBCT with post-surgical CBCT, 84.7% of the sites presented identical or less sinus opacity; nine locations (15%) showed decreased, and another nine increased (15%) post-surgical sinus opacity. Fifty-three ZIs (89.8%) maintained stable soft tissue. Six ZIs had recessions with no signs of infection. ZIs and prosthesis survival rate was 100%. CONCLUSIONS The study highlights the effectiveness of ZAGA-based zygomatic implant rehabilitations using Round and Flat designs. Despite patient number constraints, minimal changes in the frequency of late complications from the 1-year follow-up were observed. 100% implant and prosthesis survival rate over a mean follow-up of 46.5 months is reported.
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Affiliation(s)
- Carlos Aparicio
- Zygomatic Unit, Hepler Bone Clinic, ZAGA Center Barcelona, Roman Macaya, 22-24, 08022, Barcelona, Spain.
- International Teaching Scholar, Indiana University School of Dentistry, Indianapolis, USA.
| | - Waldemar D Polido
- Oral and Maxillofacial Surgery, Indiana University School of Dentistry Indianapolis, USA. ZAGA Center, Indiana University, 1121 W. Michigan Street, Indianapolis, IN, 46202, USA
| | - Antoine Chehade
- Seaforth Oral Surgery, ZAGA Center Montreal, 3550 côte des neiges, suite 170, Montreal, QC, H3H 1V4, Canada
| | - Marc Shenouda
- Seaforth Oral Surgery, ZAGA Center Montreal, 3550 côte des neiges, suite 170, Montreal, QC, H3H 1V4, Canada
| | - Madalina Simon
- ZAGA Center Stuttgart, All-On-4 Excellence Center, Kronprinzstraße 11, 70173, Stuttgart, Germany
| | - Peter Simon
- ZAGA Center Stuttgart, All-On-4 Excellence Center, Kronprinzstraße 11, 70173, Stuttgart, Germany
| | - Bilal Al-Nawas
- Department for Oral and Maxillofacial Surgery, Plastic Surgery, University Medical Center of the J. Gutenberg University Mainz, Augustusplatz 2, 55131, Mainz, Germany
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Ahn JH, Lim YJ, Lee J, Baek YW, Kim MJ, Kwon HB. A One-Year Randomized Controlled Clinical Trial of Three Types of Narrow-Diameter Implants for Fixed Partial Implant-Supported Prosthesis in the Mandibular Incisor Area. Bioengineering (Basel) 2024; 11:272. [PMID: 38534546 DOI: 10.3390/bioengineering11030272] [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: 02/18/2024] [Revised: 03/05/2024] [Accepted: 03/07/2024] [Indexed: 03/28/2024] Open
Abstract
Narrow-diameter implants (NDI) serve as a solution for treating limited bone volume in the anterior mandible. This study aimed to evaluate the one-year clinical outcomes of various NDIs in the mandibular incisor area after immediate loading in partially edentulous patients. This single-center, prospective, single-blinded, randomized controlled trial study included 21 patients, with 7 patients in each of the following groups: control (BLT NC SLActive®; Straumann), experimental group 1 (CMI IS-III Active® S-Narrow; Neobiotech), and experimental group 2 (CMI IS-III Active® Narrow; Neobiotech). Using full digital flow, two fixtures were placed in each patient and immediately provisionalized on the day of surgery. Evaluations encompassed periapical radiographs, implant stability quotient (ISQ), implant stability test (IST) readings, per-implant soft tissue health, patient satisfaction surveys, and esthetic score assessments. Definitive prostheses were delivered twelve weeks post-surgery (CRiS, number: KCT0007300). Following exclusions due to low stability values (n = 2), fixture failure (n = 5), and voluntary withdrawal (n = 1), the implant success rate for patients completing all clinical protocols stood at 100%. The resulting patient failure rates in the control, experimental group 1, and experimental group 2 were 50.0%, 42.9%, and 14.3%, respectively. There were no significant differences between the groups in terms of marginal bone loss, soft tissue health, patient satisfaction, and esthetic scores. Narrow implants showed superior clinical outcomes, followed by S-Narrow and Straumann implants. Calculated one-year survival rates at the implant level were 66.7% for the control group, 85.7% for experimental group 1, and 100% for experimental group 2. All three types of NDIs showed acceptable clinical and radiographic results during the year-long observation period.
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Affiliation(s)
- Ji-Ho Ahn
- Department of Prosthodontics and Dental Research Institute, School of Dentistry, Seoul National University, Seoul 03080, Republic of Korea
| | - Young-Jun Lim
- Department of Prosthodontics and Dental Research Institute, School of Dentistry, Seoul National University, Seoul 03080, Republic of Korea
| | - Jungwon Lee
- Department of Periodontology, One-Stop Specialty Center, Seoul National University Dental Hospital, Seoul 03080, Republic of Korea
| | - Yeon-Wha Baek
- Department of Prosthodontics, Gwanak Center, Seoul National University Dental Hospital, Seoul 08826, Republic of Korea
| | - Myung-Joo Kim
- Department of Prosthodontics and Dental Research Institute, School of Dentistry, Seoul National University, Seoul 03080, Republic of Korea
| | - Ho-Beom Kwon
- Department of Prosthodontics and Dental Research Institute, School of Dentistry, Seoul National University, Seoul 03080, Republic of Korea
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Herrera-Pérez P, García-De-La-Fuente AM, Andia-Larrea E, Marichalar-Mendia X, Aguirre-Urizar JM, Aguirre-Zorzano LA. Clinical analysis of the tooth-implant papilla for two narrow-diameter titanium-zirconium implants in the anterior area: prospective controlled clinical study. BMC Oral Health 2024; 24:310. [PMID: 38443879 PMCID: PMC10916199 DOI: 10.1186/s12903-024-04075-2] [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: 12/02/2023] [Accepted: 02/26/2024] [Indexed: 03/07/2024] Open
Abstract
BACKGROUND Rehabilitation of the anterior area when the mesio-distal space is reduced is a challenge for the clinician, due to the patient's anatomical limitations and aesthetic requirements. Narrow Diameter Implants (NDI) are an option of treatment when the standard diameter implant is not possible, but the evidence is scarce. This prospective clinical study aims to analyze the formation of the tooth-implant papilla between the implant and the adjacent natural tooth in the maxillary lateral incisors and mandibular incisors. METHODS A total of 40 patients treated with NDI, of titanium-zirconium (Ti-Zr) alloy i.e., 2.9 mm Test Group (TG) and 3.3 mm Control Group (CG), were included. The mesiodistal distance between the adjacent natural teeth was used for implant selection, maintaining 1.5 mm between the fixation and the adjacent tooth. Clinical assessment was performed by a clinical examiner at 6 and 12 months after the final prosthesis. The primary variable was the Jemt Papillary Index. Also, implant survival rate (SR), complications, Implant Stability Quotient (ISQ), and patient-reported outcomes measures (PROMs) such as aesthetics, chewing, phonation, comfort, and self-esteem were analyzed. RESULTS A significant amount of papilla filling was observed concerning the baseline, with a trend towards more formation of the papilla in the TG, with a JPI score of 3. No significant differences were observed between the two groups regarding implant SR, clinical parameters, and complications. In terms of PROMs, a higher satisfaction in the TG was observed, with significant intergroup differences for aesthetics, comfort, self-esteem, and primary stability ISQ (TG: 59.05 (SD: 5.4) vs. CG: 51.55 (SD: 5.7)). CONCLUSIONS The 2.9 mm diameter Ti-Zr implants achieved a formation of papilla similar to 3.3 mm implants in the anterior region at 12 months of follow-up after the final prosthetic restoration. The use of Ti-Zr implants with a diameter of 2.9 mm to rehabilitate single teeth in areas of the anterior region, where the mesiodistal distance is limited, showed favorable clinical results and a high degree of satisfaction during 1 year of observation similar to 3.3 mm dental implants. TRIAL REGISTRATION This study was retrospectively registered in ClinicalTrials.gov with the number NCT05642520, dated 18/11/2022.
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Affiliation(s)
| | - Ana María García-De-La-Fuente
- Research Group: GIU21/042Department of StomatologyFaculty of Medicine and Nursing, University of the Basque Country (UPV/EHU), Barrio Sarriena S/N, 48940, Leioa, Biscay, Spain.
| | - Eztizen Andia-Larrea
- International University of Catalunya, Barcelona, Spain
- Department of Stomatology, University of the Basque Country (UPV/EHU), Biscay, Spain
| | - Xabier Marichalar-Mendia
- Research Group: GIU21/042, Department of Nursery I, University of the Basque Country (UPV/EHU), Biscay, Spain
| | - José Manuel Aguirre-Urizar
- Research Group: GIU21/042Department of StomatologyFaculty of Medicine and Nursing, University of the Basque Country (UPV/EHU), Barrio Sarriena S/N, 48940, Leioa, Biscay, Spain
| | - Luis Antonio Aguirre-Zorzano
- Research Group: GIU21/042Department of StomatologyFaculty of Medicine and Nursing, University of the Basque Country (UPV/EHU), Barrio Sarriena S/N, 48940, Leioa, Biscay, Spain
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Müller F, Al-Nawas B, Storelli S, Quirynen M, Hicklin S, Castro-Laza J, Bassetti M, Srinivasan M. Small-diameter titanium grade IV and titanium-zirconium implants in edentulous mandibles: Ten-year results from a double-blind, randomised controlled split-mouth core-trial. Clin Oral Implants Res 2024; 35:77-88. [PMID: 37942666 DOI: 10.1111/clr.14199] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2023] [Revised: 09/11/2023] [Accepted: 10/18/2023] [Indexed: 11/10/2023]
Abstract
The goal of this extension study was to compare the 10-year outcome of 3.3 mm diameter titanium-zirconium (TiZr) or grade IV titanium (Ti) implants in mandibular implant-overdentures. MATERIALS AND METHODS This study is the 10-year follow-up from a randomised, controlled, double-blind, split-mouth multicentre clinical trial. Patients with edentulous mandibles had received two implants in the interforaminal region (bone-level, diameter 3.3 mm, microrough surface), one of TiZr (test) and one of Ti (control). Implant survival and success, plaque and sulcus bleeding indices, probing pocket depth, gingival margin, clinical attachment level and radiographic crestal bone levels were evaluated. RESULTS Fifty of 91 patients with implants were available for the 10-year examination and 36 patients were valid for the intent-to-treat (ITT) analysis. The implant success rate was calculated as 94.6% and 91.9% for the TiZr implants and the Ti implants respectively. Four implants were lost (TiZr = 1; Ti = 3) in the entire study period. Kaplan-Meier survival analyses estimated 10- year implant survival rate for TiZr to 98.9% and Ti 95.8%.The mean of total and functional crestal bone loss was 1.49 mm (±1.37 mm) and 0.82 mm (±1.09 mm) in the TiZr group and 1.56 mm (±1.34 mm) and 0.85 mm (±1.16 mm) in the Ti group. CONCLUSIONS This split-mouth design RCT on mandibular implant-overdentures evidenced, bearing in mind its follow-up time-related reduced cohort size, high 10-year implant success- and survival rates. These results confirm TiZr as well-suited implant material for realising small-diameter implants. Registered on www. CLINICALTRIALS gov: NCT01878331.
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Affiliation(s)
- Frauke Müller
- Division of Gerodontology and Removable Prosthodontics, University of Geneva, Geneva, Switzerland
| | | | - Stefano Storelli
- Dental Clinic, San Paolo Hospital, University of Milan, Milan, Italy
| | - Marc Quirynen
- School of Dentistry, Catholic University Leuven, Leuven, Belgium
| | - Stefan Hicklin
- Clinic of Preventive Dentistry, Periodontology and Cariology, Center for Dental Medicine, University of Zurich, Zurich, Switzerland
- Clinic of General, Special Care and Geriatric Dentistry, Center for Dental Medicine, University of Zurich, Zurich, Switzerland
| | | | - Mario Bassetti
- Clinic for Oral and Maxillofacial Surgery, Cantonal Hospital Lucerne, Lucerne, Switzerland
| | - Murali Srinivasan
- Division of Gerodontology and Removable Prosthodontics, University of Geneva, Geneva, Switzerland
- Clinic of General, Special Care and Geriatric Dentistry, Center for Dental Medicine, University of Zurich, Zurich, Switzerland
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Yu SH, Saleh MHA, Wang HL. Simultaneous or staged lateral ridge augmentation: A clinical guideline on the decision-making process. Periodontol 2000 2023; 93:107-128. [PMID: 37529966 DOI: 10.1111/prd.12512] [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: 01/29/2023] [Revised: 06/30/2023] [Accepted: 07/11/2023] [Indexed: 08/03/2023]
Abstract
Lateral ridge augmentation is a standard surgical procedure that can be performed prior to (staged) or simultaneously with implant placement. The decision between a simultaneous or staged approach involves considering multiple variables. This paper proposed a decision-making process that serves as a guideline for choosing the best treatment choice based on the available evidence and the author's clinical experience.
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Affiliation(s)
- Shan-Huey Yu
- Department of Periodontics and Oral Medicine, University of Michigan School of Dentistry, Ann Arbor, Michigan, USA
- Private Practice, Vienna, Virginia, USA
| | - Muhammad H A Saleh
- Department of Periodontics and Oral Medicine, University of Michigan School of Dentistry, Ann Arbor, Michigan, USA
| | - Hom-Lay Wang
- Department of Periodontics and Oral Medicine, University of Michigan School of Dentistry, Ann Arbor, Michigan, USA
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Kim JE, Yoon Y, Pae A, Kwon YD. Clinical outcome of narrow diameter dental implants: a 3-year retrospective study. Maxillofac Plast Reconstr Surg 2023; 45:26. [PMID: 37526800 PMCID: PMC10393933 DOI: 10.1186/s40902-023-00394-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Accepted: 07/21/2023] [Indexed: 08/02/2023] Open
Abstract
BACKGROUND This study aimed to analyze the clinical outcome and complications of narrow-diameter dental implants (NDIs) (diameter ≤3.5 mm). METHODS The 274 NDIs that met the selection criteria from 2013 to 2018 were included in the retrospective study, and the survival rates (SVR) were compared. Mechanical complications included screw loosening and fractures of the implant components, such as the implant fixture, abutment, and prosthesis. In addition, marginal bone loss (MBL) was measured immediately after surgery and 1 year after loading. RESULTS The 3-year cumulative SVR was 92.4%. Nineteen fixtures failed during the follow-up. The failure rate was significantly higher (OR=4.573, p<0.05) in smokers and was significantly higher in osteoporosis patients (OR=3.420, p<0.05). The vertical and horizontal values of MBL were 0.33±0.32 mm and 0.18±0.17 mm, respectively. Mechanical complications included screw loosening (5.5%) and porcelain fracture (2.2%), but no fractures of the fixture or components were observed. The choice of titanium and zirconium (TiZr) alloy implant was significantly more frequent in the posterior region. Bone graft was significantly more frequently done in the anterior region. CONCLUSIONS According to the high SVR and stability of NDIs, the findings of the study suggest that NDIs may be a replacement for regular diameter dental implants (RDIs) and the use of TiZr alloy could extend the indication of NDIs. In the esthetic area, contour augmentation may be a reason for increasing the frequency of bone grafts.
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Affiliation(s)
- Jae-Eun Kim
- Department of Dentistry, Graduate School, Kyung Hee University, Seoul, Republic of Korea
| | - Youngjae Yoon
- Department of Oral and Maxillofacial Surgery, College of Dentistry, Kyung Hee University, Seoul, Republic of Korea
| | - Ahran Pae
- Department of Prosthodontics, College of Dentistry, Kyung Hee University, Seoul, Republic of Korea
| | - Yong-Dae Kwon
- Department of Oral and Maxillofacial Surgery, College of Dentistry, Kyung Hee University, Seoul, Republic of Korea.
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Khorshid HE, Issa NO, Ekram AM. Effect of implant diameter and cantilever length on the marginal bone height changes and stability of implants supporting screw retained prostheses: A randomized double blinded control trial. J Adv Prosthodont 2023; 15:101-113. [PMID: 37441715 PMCID: PMC10333100 DOI: 10.4047/jap.2023.15.3.101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2023] [Revised: 04/11/2023] [Accepted: 04/16/2023] [Indexed: 07/15/2023] Open
Abstract
PURPOSE This randomized controlled trial aimed to evaluate the effect of implants' two different diameters and cantilever lengths on the marginal bone loss and stability of mplants supporting maxillary prostheses. MATERIALS AND METHODS Ninety-six implants were placed in sixteen completely edentulous maxillary ridges. Patients were randomly divided into two groups: Group A, implants were placed with a cantilever to anterior-posterior AP spread length (CL:AP) at a ratio of 1:3; Group B, implants were placed with a CL:AP at a ratio of 1:2. Patients were further divided into four sub-groups: Groups A1, A2, B1, and B2. Groups A1 and B1 received small diameter implants while Groups A2 and B2 received standard diameter implants. Bone height and stability measurements around each implant were performed at 0, 4, 8 and 24 months after definitive prostheses delivery. RESULTS Statistical analysis of the mean implant stability and height values revealed an insignificant difference between Group A1 and Group A2 at all the different time intervals while significantly higher values in Group B1 in comparison with Group B2. Results also showed significantly higher values in Group A1 in comparison with Group B1 and an insignificant difference between Group A2 and Group B2 at all the different time intervals. CONCLUSION It can be concluded that the use of small diameter implants placed with a CL:AP at a ratio of 1:3 provided predictable results and that the 1:2 CL:AP significantly induced more critical bone loss in the small diameter implants group, which can significantly reduce long term success and survival of implants.
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Affiliation(s)
| | - Noha Ossama Issa
- Oral and Maxillofacial Radiology, Faculty of Dentistry, Cairo University, Giza, Egypt
| | - Amr Mohamed Ekram
- Oral and Maxillofacial Surgery Consultant, Private practice, Cairo, Egypt
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Haugen HJ, Chen H. Is There a Better Biomaterial for Dental Implants than Titanium?—A Review and Meta-Study Analysis. J Funct Biomater 2022; 13:jfb13020046. [PMID: 35645254 PMCID: PMC9149859 DOI: 10.3390/jfb13020046] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Revised: 03/28/2022] [Accepted: 04/15/2022] [Indexed: 02/04/2023] Open
Abstract
This article focuses on preclinical studies and reviews the available evidence from the literature on dental implant and abutment materials in the last decade. Specifically, different peri-implantitis materials and how surface modifications may affect the peri-implant soft-tissue seal and subsequently delay or hinder peri-implantitis are examined. This review analyzed more than 30 studies that were Randomized Controlled Trials (RCTs), Controlled Clinical Trials (CCTs), or prospective case series (CS) with at least six months of follow-up. Meta-analyses were performed to make a comparison between different implant materials (titanium vs. zirconia), including impact on bone changes, probing depth, plaque levels, and peri-implant mucosal inflammation, as well as how the properties of the implant material and surface modifications would affect the peri-implant soft-tissue seal and peri-implant health conditions. However, there was no clear evidence regarding whether titanium is better than other implant materials. Clinical evidence suggests no difference between different implant materials in peri-implant bone stability. The metal analysis offered a statistically significant advantage of zirconia implants over titanium regarding developing a favorable response to the alveolar bone.
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Affiliation(s)
- Håvard J. Haugen
- Department of Biomaterials, Institute of Clinical Dentistry, University of Oslo, 0318 Oslo, Norway
- Correspondence:
| | - Hongyu Chen
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, Troy, NY 12180, USA;
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Aparicio C, Polido WD, Chow J, Davó R, Al-Nawas B. Round and flat zygomatic implants: effectiveness after a 1-year follow-up non-interventional study. Int J Implant Dent 2022; 8:13. [PMID: 35359196 PMCID: PMC8971328 DOI: 10.1186/s40729-022-00412-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Accepted: 03/09/2022] [Indexed: 11/10/2022] Open
Abstract
INTRODUCTION There are few zygomatic implants (ZI) designs available. The objective of this non-interventional study was to report the effectiveness of two new site-specific ZI, selected and placed following the zygoma anatomy-guided approach (ZAGA). MATERIALS AND METHODS Consecutive patients presenting indications for rehabilitation using ZI were treated according to ZAGA Concept recommendations. Implants were immediately loaded following the manufacturer's instructions. Success criteria regarding prosthetic offset, rhino-sinus status, soft tissue condition, and implant stability were additionally used as outcome parameters. RESULTS Twenty patients were followed for a period of 12 to 28 months (average 18.8 months). Ten received 2 ZI plus regular anterior implants; One received 3 ZI plus regular implants and nine received 4 ZI. In total, 59 ZI were placed, 34 (58%) Straumann ZAGA-Flat design, and 25 (42%) ZAGA-Round. Forty-nine percent of the sites were classified as ZAGA-4 type and 27% as ZAGA-2. Four patients (20%) presented discontinuities of the sinus-nose floor before surgery and 15 patients (75%) presented previous sinus opacities. All implants bar one reached more than 45 N.cm of insertion torque. No surgical complications were observed. After 1 year, the modified Lund-Mackay score was negative in 17 patients. Seventeen sites in 11 patients exhibited decreased opacity when pre-surgical imaging was compared to 1-year post-surgical CBCT. All implants and prostheses remained stable and in function. CONCLUSIONS The study concluded 100% implant/prosthesis survival rates and low complication levels. Within the limitations of the sample and observation period, results suggest that even in cases of extremely resorbed maxillae (as per cases in this study), ZAGA-Flat and ZAGA-Round ZI are viable treatment options when restoring atrophic maxillae following the ZAGA protocol.
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Affiliation(s)
- Carlos Aparicio
- Zygomatic Unit at Hepler Bone Clinic, ZAGA Center, Roman Macaya, 22-24, 08022, Barcelona, Spain. .,International Teaching Scholar, Indiana University School of Dentistry, Indianapolis, USA.
| | - Waldemar D Polido
- Oral and Maxillofacial Surgery, Indiana University School of Dentistry, 1121 W. Michigan Street, Indianapolis, IN, 46202, USA.,ZAGA Center, Indiana University, Bloomington, USA
| | - James Chow
- ZAGA Center Hong Kong, Associated Brånemark Osseointegration Center, 1901-1905, 1912-1913, The Center, 99 Queen's Road Central, Hong Kong, Hong Kong SAR
| | - Rubén Davó
- ZAGA Center, Alicante, Spain.,Dentistry and Maxillofacial Department, International Vithas Medimar Hospital, c/ Padre Arrupe, 20, 03016, Alicante, Spain
| | - Bilal Al-Nawas
- Department for Oral and Maxillofacial Surgery, Plastic Surgery, University Medical Center of the J. Gutenberg University Mainz, Augustusplatz 2, 55131, Mainz, Germany
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Friedmann A, Winkler M, Diehl D, Yildiz MS, Bilhan H. One-year performance of posterior narrow diameter implants in hyperglycemic and normo-glycemic patients-a pilot study. Clin Oral Investig 2021; 25:6707-6715. [PMID: 33939006 PMCID: PMC8602141 DOI: 10.1007/s00784-021-03957-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Accepted: 04/19/2021] [Indexed: 12/14/2022]
Abstract
OBJECTIVES The aim of the study was to compare the performance of narrow diameter implants in patients with uncontrolled diabetes mellitus type 2 (T2DM) and normo-glycemic individuals during the first 12 months after implant loading. MATERIAL AND METHODS In 16 T2DM patients with HbA1C > 6.5% (test group) and 16 normo-glycemic patients (HbA1C < 6.0%; control group), one to two narrow diameter tissue level implants were placed in the posterior maxilla or mandible. After 3-month lasting integration period, implants were loaded by fixed dentures. The clinical parameters probing depth (PD), bleeding on probing (BOP), attachment loss (CAL), recession and papilla bleeding index (PBI) were assessed manually at loading and after 12 months of function. The paired digital periapical radiographs were analyzed with regard to the change in marginal bone level (MBL) from baseline to 12 months' control. The mean values calculated for both patient groups were statistically analyzed. The technical complications were recorded. RESULTS The T2DM group accounted 13 patients due to 3 dropouts. The overall implant survival rate after 12 months was 100%. The differences in means for the clinical parameters and the MBL were statistically non-significant between the T2DM and normo-glycemic patients for the short period of loaded function reported here. No technical complications were recorded. CONCLUSIONS The study demonstrated an encouraging clinical outcome with narrow diameter implants in patients with uncontrolled T2DM compared to non-diabetics after 12 months post loading. For the short observation period, no biological and technical complications were reported regardless the glycemic status. CLINICAL RELEVANCE Patients with HbA1C > 6.5% may benefit from the treatment with narrow diameter implants by avoiding complex surgical interventions with augmentation procedures. TRIAL REGISTRATION Clinicaltrials.gov : NCT04630691.
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Affiliation(s)
- Anton Friedmann
- Department of Periodontology, School of Dentistry, Faculty of Health, Witten/Herdecke University, Alfred-Herrhausen Str. 45, 58455 Witten, Germany
| | - Marianna Winkler
- Department of Periodontology, School of Dentistry, Faculty of Health, Witten/Herdecke University, Alfred-Herrhausen Str. 45, 58455 Witten, Germany
| | - Daniel Diehl
- Department of Periodontology, School of Dentistry, Faculty of Health, Witten/Herdecke University, Alfred-Herrhausen Str. 45, 58455 Witten, Germany
- Institute of Pharmacology and Toxicology, Center for Biomedical Education and Research (ZBAF), Faculty of Health, Witten/Herdecke University, Stockumer Straße 10, 58453 Witten, Germany
| | - Mehmet Selim Yildiz
- Department of Periodontology, Faculty of Dentistry, Altınbaş University, Zuhuratbaba, İncirli Cd. No:11-A, 34147 Bakırköy, Istanbul, Turkey
| | - Hakan Bilhan
- Department of Periodontology, School of Dentistry, Faculty of Health, Witten/Herdecke University, Alfred-Herrhausen Str. 45, 58455 Witten, Germany
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Wimmer L, Petrakakis P, El-Mahdy K, Herrmann S, Nolte D. Implant-prosthetic rehabilitation of patients with severe horizontal bone deficit on mini-implants with two-piece design-retrospective analysis after a mean follow-up of 5 years. Int J Implant Dent 2021; 7:71. [PMID: 34318379 PMCID: PMC8316513 DOI: 10.1186/s40729-021-00353-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2021] [Accepted: 05/05/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND As a consequence of tooth loss due to trauma or extraction, a reduced alveolar crest volume limits the deployment of standard implants in certain patient cases. For this reason, minimal-invasive treatment with mini-dental implants (MDI) might be an option to allow implant treatment even in cases with severe horizontal bone loss without augmentation measures. The aim of this retrospective cohort study was to investigate clinical and radiological implant, as well as patient-related parameters after treatment with MDI. RESULTS Clinical and radiological records of 19 female (82.6%) and 4 male patients (17.4%) (N = 23), who received 52 mini-dental implants with a two-piece design in a single surgical center between November 2011 and October 2018, were retrospectively analyzed. Implants were submitted to conventional loading on different types of screwed superstructures. Crestal bone loss was measured on standardized periapical radiographs. Patient-related outcome parameters (PROMs) were recorded during follow-up period. Mean clinical and radiological follow-up was 69.6 months (5.8 years) and 51.6 months (4.3 years), respectively. Three implants were lost in two patients, leading to an implant survival rate of 94.2%. Mean radiological crestal bone loss was 1.6 mm. Both amount of peri-implant recession and crestal bone loss were significantly correlated (r = 0.65; p < 0.001). Likewise, a significant correlation was observed between deeper probing depths and increased peri-implant bone loss (r = 0.41; p = 0.012). Alveolar ridges with a reduced alveolar crest width were significantly correlated with higher peri-implant bone loss as well (r = - 0.33; p = 0.011). No prosthetic complications were reported during follow-up. Extent of midfacial recession and papilla height loss had a significant negative impact on most of the PROMs. CONCLUSIONS Treatment with MDI seems to be a successful alternative treatment option, especially for elderly patients with reduced crest width at implant sites. Due to the good clinical results and high survival and success rates, this treatment option was associated with high patient satisfaction. Despite the promising results, particular consideration should be given to appropriate treatment planning in these patients due to the strong correlation between peri-implant soft-tissue parameters, crestal bone loss, and reduced alveolar crest width.
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Affiliation(s)
- Lukas Wimmer
- Clinic for Oral & Maxillofacial Surgery mkg-muc®, Munich, Germany.,Private Dental Practice, St. Johann, Salzburg, Austria
| | | | - Karim El-Mahdy
- Department of Restorative Dentistry & Periodontology, Dental School, Ludwig Maximilian University, Munich, Germany
| | - Surian Herrmann
- Clinic for Oral & Maxillofacial Surgery mkg-muc®, Munich, Germany
| | - Dirk Nolte
- Clinic for Oral & Maxillofacial Surgery mkg-muc®, Munich, Germany. .,Ruhr University Bochum, Bochum, Germany.
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12
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Coskunses FM, Tak Ö. Clinical performance of narrow-diameter titanium-zirconium implants in immediately loaded fixed full-arch prostheses: a 2-year clinical study. Int J Implant Dent 2021; 7:30. [PMID: 33860375 PMCID: PMC8050379 DOI: 10.1186/s40729-021-00312-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Accepted: 03/01/2021] [Indexed: 11/15/2022] Open
Abstract
Objectives The aim of this study was to evaluate the outcomes of immediate fixed full-arch prostheses supported by axial or tilted narrow-diameter Ti-Zr implants (3.3 mm) (Roxolid®, Institut Straumann® AG, Basel, Switzerland) (NDIs) in combination with standard-diameter implants up to 2 years’ follow-up. Materials and methods The study was conducted at Kocaeli University Faculty of Dentistry from 2016 to 2018. 37 jaws of 28 patients with an average age of 52 years were rehabilitated with fixed full-arch prostheses supported by 179 implants. Cumulative survival rate (CSR), implant success, marginal bone loss (MBL), and prosthetic survival rate as well as complications were analyzed. Results Total CSR of 99.4% and 98.5% for all and narrow implants respectively have been observed at 2 years’ follow-up. No prosthesis failures were observed, yielding a cumulative prosthetic survival rate of 100%. The NDIs achieved 0.63 mm MBL at 1 year and 1.02 mm at 2 years. The mean MBL at 1 year was 0.51 mm (mandible 0.63 mm/maxilla 0.41 mm) and 0.73 mm (mandible 0.90 mm/maxilla 0.43 mm) at 2 years. Both implant angulation and loading protocol did not influence the MBL. Conclusions The combination of narrow-diameter implants with standard-diameter implants in immediate fixed full-arch rehabilitation has a good prognosis to become a new standard of care for severely atrophic jaws. Clinical relevance The use of narrow-diameter implants in fixed full-arch rehabilitations in atrophic ridges would be a successful and predictable treatment approach.
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Affiliation(s)
- Fatih Mehmet Coskunses
- Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, University of Kocaeli, 41190, Kocaeli, Turkey.
| | - Önjen Tak
- Department of Prosthodontics, Faculty of Dentistry, Istanbul Okan University, Tuzla, Istanbul, Turkey
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13
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Xiao W, Chen Y, Chu C, Dard MM, Man Y. Influence of implant location on titanium-zirconium alloy narrow-diameter implants: A 1-year prospective study in smoking and nonsmoking populations. J Prosthet Dent 2021; 128:159-166. [PMID: 33551139 DOI: 10.1016/j.prosdent.2020.09.051] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Revised: 09/21/2020] [Accepted: 09/21/2020] [Indexed: 02/05/2023]
Abstract
STATEMENT OF PROBLEM Titanium-zirconium (Ti-Zr) alloy (Roxolid) narrow-diameter implants (NDIs) have been widely used for implant-supported prostheses in anterior and posterior regions in the jaws. However, the relationship between implant location and clinical outcome remains unclear. PURPOSE The purpose of this clinical study was to evaluate and compare the clinical and radiographic outcomes of NDIs placed in different regions of the jaws in both smokers and nonsmokers. MATERIAL AND METHODS Eighty-four participants scheduled to receive NDIs for tooth rehabilitation were included, and the inserted NDIs were divided into 3 groups depending on their locations: implants used to restore anterior teeth, implants used to restore premolars, and implants used to restore molars. Crestal bone loss (CBL), implant survival and success rates, bleeding on probing (BOP), and pocket probing depth (PPD) were evaluated 6 and 12 months after implant loading (α=.017 for implant survival and success rates after Bonferroni correction, α=.05 for other parameters). RESULTS Statistical analysis of 6- and 12-month CBL of all participants presented no statistically significant difference among the 3 groups. For smokers, the molar group presented significantly more CBL than the premolar group (0.90 ±0.94 versus 0.16 ±0.27 mm, P=.027) at the 6-month examination. The implant survival rates were 95.65%, 100%, and 100% for anterior, premolar, and molar regions, respectively (P=.283). No statistically significant difference was observed regarding periodontal parameters (P>.05). CONCLUSIONS Implant location has no influence on the clinical and radiographic parameters of Ti-Zr NDIs placed in a nonsmoking population. However, the combination of posterior location and smoking may induce higher risk of crestal bone loss. Caution should be taken when restoring molars for smokers with NDIs.
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Affiliation(s)
- Wenlan Xiao
- Graduate student, State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases &Department of Oral Implantology, West China School of Stomatology, Sichuan University, Chengdu, PR China
| | - Yaqian Chen
- Graduate student, State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Department of Oral Implantology, West China Hospital of Stomatology, Sichuan University, Chengdu, PR China
| | - Chenyu Chu
- Graduate student, State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Department of Oral Implantology, West China Hospital of Stomatology, Sichuan University, Chengdu, PR China
| | - Michel M Dard
- Global Medical Director, Medical Affairs, Straumann Group, Basel, Switzerland; Associate Professor of Dental Medicine, Section of Oral, Diagnostic and Rehabilitation Sciences, Columbia University, College of Dental Medicine, New York, NY
| | - Yi Man
- Professor, State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Department of Oral Implantology, West China Hospital of Stomatology, Sichuan University, Chengdu, PR China.
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14
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Ackermann KL, Barth T, Cacaci C, Kistler S, Schlee M, Stiller M. Clinical and patient-reported outcome of implant restorations with internal conical connection in daily dental practices: prospective observational multicenter trial with up to 7-year follow-up. Int J Implant Dent 2020; 6:14. [PMID: 32266497 PMCID: PMC7138872 DOI: 10.1186/s40729-020-00211-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2019] [Accepted: 03/12/2020] [Indexed: 11/12/2022] Open
Abstract
Background The interpretation of the results of randomized clinical trials is often questioned in relation with daily circumstances in practices. This prospective observational multicenter study was instigated to reflect the need for information in real-life situations with dental implants with internal conical implant-abutment connection (Conelog implant system). The implants were followed up at least 5-year post-loading; survival analysis (Kaplan-Meier), changes of soft tissue, and bone level over time, as well as patient satisfaction were evaluated. Results In total, 130 dental implants were placed in 94 patients (64 female, 30 male). Mean age of patients was 50.4 ± 13.7. At 5-year post-loading, 104 implants in 76 patients were available for evaluation. The cumulative implant survival rate was 96.6%. After an initial bone remodeling process post-surgery (bone loss of − 0.52 ± 0.55 mm), the bone level change remained clinically stable from loading to 5-year post-loading (− 0.09 ± 0.43 mm). Patient satisfaction surveyed by questionnaire (comfort, ability to chew and taste, esthetics, general satisfaction) steadily increased towards the end. At the last study follow-up, all the patients rated their general satisfaction as either very satisfied (87.5%) or satisfied (12.5%). Conclusion The study implants have shown to be highly effective with reliable peri-implant tissue stability over the 5 to 7 years of observation for both single tooth restorations and fixed partial dentures while used in standard conditions in daily dental practice. The results obtained are comparable with those obtained in controlled clinical trials.
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Affiliation(s)
| | | | | | | | - Markus Schlee
- , Forchheim, Germany.,Department of Maxillofacial Surgery, Goethe University Frankfurt, Frankfurt, Germany
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15
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Affiliation(s)
- Hamdan S. ALGHAMDI
- Department of Periodontics and Community Dentistry, College of Dentistry, King Saud University
| | - John A. JANSEN
- Department of Dentistry–Biomaterials, Radboud University Medical Center
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16
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Cabrera-Domínguez JJ, Castellanos-Cosano L, Torres-Lagares D, Pérez-Fierro M, Machuca-Portillo G. Clinical performance of titanium-zirconium implants with a hydrophilic surface in patients with controlled type 2 diabetes mellitus: 2-year results from a prospective case-control clinical study. Clin Oral Investig 2019; 24:2477-2486. [PMID: 31701247 DOI: 10.1007/s00784-019-03110-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2018] [Accepted: 10/01/2019] [Indexed: 12/21/2022]
Abstract
OBJECTIVE Analyze the 2-year clinical performance of single-unit titanium-zirconium (TiZr) alloy narrow-diameter (3.3 mm) dental implants with a hydrophilic surface (Straumann® Roxolid®, SLActive®) in patients with controlled type 2 diabetes mellitus (T2DM), measured using the glycated hemoglobin A (HbA1c) concentration test, compared with results in individuals without T2DM. MATERIAL AND METHODS The studied sample consisted of 28 patients, 14 with T2DM (study group) and 14 without (control group). The plaque index, bleeding on probing, probing depth, clinical attachment level, gingival biotype, and marginal bone loss (MBL) at the site of the implants were assessed. HbA1c levels were assessed in all patients during each checkup. RESULTS Two years after implant placement and prosthetic restoration no implant failures were reported in either group, resulting in 100% survival and success rates in both groups. No statistically significant differences in MBL were found between the control and study groups (p > 0.05). CONCLUSIONS Within the limitations of this study, it can be concluded that reduced-diameter TiZr alloy implants with a hydrophilic surface represent a safe and predictable treatment option for patients with well-controlled T2DM. The clinical performance was comparable with that observed in individuals without T2DM in the medium term. CLINICAL RELEVANCE The narrow implants placed in patients with T2DM with well-controlled glycemia (HbA1c) showed a marginal bone loss and success and survival rates similar to those of the control group without DM2, in the medium term.
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Affiliation(s)
- José J Cabrera-Domínguez
- Master's Program for Special Care in Dentistry, School of Dentistry, University of Seville, Seville, Spain
| | - Lizett Castellanos-Cosano
- Master's Program for Special Care in Dentistry, School of Dentistry, University of Seville, Seville, Spain
| | | | - Manuel Pérez-Fierro
- Master's Program for Special Care in Dentistry, School of Dentistry, University of Seville, Seville, Spain
| | - Guillermo Machuca-Portillo
- Special Care in Dentistry, School of Dentistry, University of Seville, c/ Avicena s/n, 41009, Seville, Spain.
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17
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Schiegnitz E, Al‐Nawas B. Narrow‐diameter implants: A systematic review and meta‐analysis. Clin Oral Implants Res 2018; 29 Suppl 16:21-40. [DOI: 10.1111/clr.13272] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/16/2018] [Indexed: 01/19/2023]
Affiliation(s)
- Eik Schiegnitz
- Department of Oral and Maxillofacial Surgery, Plastic Surgery University Medical Centre of the Johannes Gutenberg‐University Mainz Mainz Germany
| | - Bilal Al‐Nawas
- Department of Oral and Maxillofacial Surgery, Plastic Surgery University Medical Centre of the Johannes Gutenberg‐University Mainz Mainz Germany
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18
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Trbakovic A, Bongenhielm U, Thor A. A clinical and radiological long-term follow-up study of narrow diameter implants in the aesthetic area. Clin Implant Dent Relat Res 2018; 20:598-605. [DOI: 10.1111/cid.12627] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2017] [Revised: 04/14/2018] [Accepted: 04/17/2018] [Indexed: 12/14/2022]
Affiliation(s)
- Amela Trbakovic
- Department of Surgical Sciences, Plastic & Oral and Maxillofacial Surgery; Uppsala University; Uppsala SE-751 85 Sweden
| | - Ulf Bongenhielm
- Uppsala & Västerås Käkkirurgiska Centrum, Vaksalagatan 8; Uppsala 753 20 Sweden
| | - Andreas Thor
- Department of Surgical Sciences, Plastic & Oral and Maxillofacial Surgery; Uppsala University; Uppsala SE-751 85 Sweden
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19
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Badran Z, Struillou X, Strube N, Bourdin D, Dard M, Soueidan A, Hoornaert A. Clinical Performance of Narrow-Diameter Titanium-Zirconium Implants: A Systematic Review. IMPLANT DENT 2018; 26:316-323. [PMID: 28114266 DOI: 10.1097/id.0000000000000557] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
PURPOSE Implant-supported prosthetic rehabilitations are in constant augmentation in everyday dental practice. This is largely due to increasing demand from patients for fixed or implant-stabilized prosthesis, although they are frequently reticent to complex preimplant bone augmentation surgeries, whenever bone volume is lacking. Narrow-diameter implants (NDI; ≤3.5 mm) have been developed to offer relatively simple implant solutions in challenging bone-deficient sites. However, concerns regarding their mechanical properties have been raised. Special titanium-zirconium material (Ti-Zr), with superior mechanical resistance, compared with pure titanium alloys has been introduced into the market. The purpose of this systematic review was to determine the available data on clinical performance of Ti-Zr NDI. MATERIALS AND METHODS A literature search of all available clinical articles dealing with Ti-Zr NDI has been carried out. After including only prospective clinical trials, 14 papers were retrieved for thorough reviewing. CONCLUSION Short-term results from preliminary clinical reports are quite promising, although the number of published studies and the follow-up periods are still insufficient to determine the real benefit of this hybrid material compared with titanium, especially when using NDI.
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Affiliation(s)
- Zahi Badran
- *Clinical Instructor, Department of Oral Implantology, Faculty of Dental Surgery, University of Nantes, Nantes, France; Associate Professor, Department of Periodontology, Faculty of Dental surgery, (Inserm U791/UIC 11) CHU de Nantes, France. †Clinical Instructor, Department of Oral Implantology, Faculty of Dental Surgery, University of Nantes, Nantes, France. ‡Adjunct Assistant Professor, Department of Periodontology and Implant Dentistry, College of Dentistry, New York University, New York, NY, and Institut Straumann, Basel, Switzerland. §Professor and Head, Department of Periodontology, Faculty of Dental surgery, (Inserm U791/UIC 11) CHU de Nantes, Nantes, France. ¶Associate Professor and Head, Department of Oral Implantology, Faculty of Dental Surgery, University of Nantes, Nantes, France
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20
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Iegami CM, Uehara PN, Sesma N, Pannuti CM, Tortamano Neto P, Mukai MK. Survival rate of titanium-zirconium narrow diameter dental implants versus commercially pure titanium narrow diameter dental implants: A systematic review. Clin Implant Dent Relat Res 2017; 19:1015-1022. [DOI: 10.1111/cid.12527] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2017] [Revised: 07/26/2017] [Accepted: 07/31/2017] [Indexed: 12/11/2022]
Affiliation(s)
- Carolina Mayumi Iegami
- Department of Prosthodontics; University of Sao Paulo, School of Dentistry, Sao Paulo; Brazil
| | | | - Newton Sesma
- Department of Prosthodontics; University of Sao Paulo, School of Dentistry, Sao Paulo; Brazil
| | | | - Pedro Tortamano Neto
- Department of Prosthodontics; University of Sao Paulo, School of Dentistry, Sao Paulo; Brazil
| | - Márcio Katsuyoshi Mukai
- Department of Prosthodontics; University of Sao Paulo, School of Dentistry, Sao Paulo; Brazil
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21
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Altuna P, Lucas-Taulé E, Gargallo-Albiol J, Figueras-Álvarez O, Hernández-Alfaro F, Nart J. Clinical evidence on titanium–zirconium dental implants: a systematic review and meta-analysis. Int J Oral Maxillofac Surg 2016; 45:842-50. [DOI: 10.1016/j.ijom.2016.01.004] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2015] [Revised: 10/21/2015] [Accepted: 01/11/2016] [Indexed: 11/15/2022]
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22
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Kämmerer TA, Palarie V, Schiegnitz E, Topalo V, Schröter A, Al-Nawas B, Kämmerer PW. A biphasic calcium phosphate coating for potential drug delivery affects early osseointegration of titanium implants. J Oral Pathol Med 2016; 46:61-66. [PMID: 27272434 DOI: 10.1111/jop.12464] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/10/2016] [Indexed: 12/11/2022]
Abstract
BACKGROUND Calcium phosphate (CaP) surface coatings may accelerate osseointegration and serve as a drug delivery system for mineral-binding biomolecules. In a pilot study, the impact of a commercially available, thin CaP coating on early osseous bone remodeling was compared with a modern, subtractive-treated rough surface (SLA-like) in an animal trial. METHODS In 16 rabbits, 32 endosseous implants (CaP; n = 16, SLA-like; n = 16) were bilaterally inserted in the proximal tibia after randomization. After 2 and 4 weeks, bone-implant contact (BIC;%) in the cortical (cBIC) and the trabecular bone (sBIC) as well as volume of bone within the screw thread with the highest amount of new-formed bone (area;%) were analyzed. RESULTS After 2 weeks, cBIC was significantly higher for CaP when compared with SLA-like (58 ± 7% versus 40.4 ± 18%; P = 0.021). sBIC for CaP was 14.7 ± 8% and for SLA-like 7.2 ± 7.8% (P = 0.081). For area, the mean volumes were 82.8 ± 10.8% for CaP and 73.6 ± 22% for SLA-like (P = 0.311). After 4 weeks, cBIC was 42.9 ± 13% for the CaP and 46.5 ± 29.1% for the SLA-like group (P = 0.775). An sBIC of 6.9 ± 9.3% was calculated for CaP and of 12.3 ± 4.8% for SLA-like (P = 0.202). The values for area were 62.3 ± 24.1% for CaP and 50.1 ± 25.9% for SLA-like (P = 0.379). CONCLUSIONS The CaP coating has putative additional advantages in the early osseoconduction phases. It seems suitable for a feasible and clinical applicable bioactivation.
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Affiliation(s)
- Till A Kämmerer
- Department of Oral, Maxillofacial and Plastic Surgery, University Medical Center Mainz, Mainz, Germany
| | - Victor Palarie
- Laboratory of Tissue Engineering, State University of Medicine and Pharmacy "N. Testemitanu", Chisinau, Moldova
| | - Eik Schiegnitz
- Department of Oral, Maxillofacial and Plastic Surgery, University Medical Center Mainz, Mainz, Germany
| | - Valentin Topalo
- Clinic for Oral & Maxillofacial Surgery, State University of Medicine and Pharmacy "N. Testemitanu", Chisinau, Moldova
| | | | - Bilal Al-Nawas
- Department of Oral, Maxillofacial and Plastic Surgery, University Medical Center Mainz, Mainz, Germany
| | - Peer W Kämmerer
- Department of Oral, Maxillofacial and Plastic Surgery, University Medical Center Rostock, Rostock, Germany
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23
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The Use of Narrow Diameter Implants in the Molar Area. Int J Dent 2016; 2016:8253090. [PMID: 27293436 PMCID: PMC4879234 DOI: 10.1155/2016/8253090] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2016] [Revised: 04/06/2016] [Accepted: 04/06/2016] [Indexed: 02/08/2023] Open
Abstract
Implant rehabilitations in the posterior jaw are influenced by many factors such as the condition of the remaining teeth, the force factors related to the patient, the quality of the bone, the maintenance of the hygiene, the limited bone height, the type and extent of edentulism, and the nature of the opposing arch. The gold standard is to place a regular diameter implant (>3.7 mm) or a wide one to replace every missing molar. Unfortunately, due to horizontal bone resorption, this option is not possible without lateral bone augmentation. In this situation, narrow diameter implant (NDI < 3.5 mm) could be the alternative to lateral bone augmentation procedures. This paper presents a clinical study where NDIs were used for the replacement of missing molars. They were followed up to 11 years. Special considerations were observed and many parameters were evaluated. NDI could be used to replace missing molar in case of moderate horizontal bone resorption if strict guidelines are respected. Yet, future controlled prospective clinical trials are required to admit their use as scientific evidence.
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24
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Wen B, Chen J, Dard M, Cai Z. The Performance of Titanium-Zirconium Implants in the Elderly: A Biomechanical Comparative Study in the Minipig. Clin Implant Dent Relat Res 2016; 18:1200-1209. [PMID: 26834004 DOI: 10.1111/cid.12389] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2015] [Accepted: 12/03/2015] [Indexed: 12/24/2022]
Affiliation(s)
- Bo Wen
- Professor, Division of Implant Dentistry, Department of Oral & Maxillofacial Surgery, Nanjing Stomatology Hospital; Medical School of Nanjing University; Nanjing China
| | - Jiang Chen
- professor, Department of Implant Dentistry, School and Hospital of Stomatology; Fujian Medical University; Fuzhou China
| | - Michel Dard
- head and director, Preclinical Research; Institut Straumann AG; Basel Switzerland
- professor, Department of Periodontology and Implant Dentistry; College of Dentistry, New York University; New York NY USA
| | - Zhiyu Cai
- professor, Department of Implant Dentistry, School and Hospital of Stomatology; Fujian Medical University; Fuzhou China
- associate professor, Department of Stomatology; Fujian Medical University Union Hospital; Fuzhou China
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25
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Müller F, Al-Nawas B, Storelli S, Quirynen M, Hicklin S, Castro-Laza J, Bassetti R, Schimmel M. Small-diameter titanium grade IV and titanium-zirconium implants in edentulous mandibles: five-year results from a double-blind, randomized controlled trial. BMC Oral Health 2015; 15:123. [PMID: 26458813 PMCID: PMC4603635 DOI: 10.1186/s12903-015-0107-6] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2015] [Accepted: 10/05/2015] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The aim of this study was to compare the 5-year survival and success rates of 3.3 mm dental implants either made from titanium-zirconium (TiZr) alloy or from Grade IV titanium (Ti Grade IV) in mandibular implant-based removable overdentures. METHODS The core study had a follow-up period of 36 months and was designed as a randomized, controlled, double-blind, split-mouth multicenter clinical trial. Patients with edentulous mandibles received two Straumann Bone Level implants (diameter 3.3 mm, SLActive®), one of TiZr (test) and one of Ti Grade IV (control), in the interforaminal region. This follow-up study recruited patients from the core study and evaluated the plaque and sulcus bleeding indices, radiographic crestal bone level, as well as implant survival and success 60 months after implant placement. RESULTS Of the 91 patients who initially received implants, 75 completed the 36 month follow-up and 49 were available for the 60 month examination. Two patients were excluded so that a total of 47 patients with an average age of 72 ± 8 years were analysed. The characteristics and 36-month performance of the present study cohort did not differ from the non-included initial participants (p > 0.05). In the period since the 36-month follow-up examination, no implant was lost. The cumulative implant survival rate was 98.9 % for the TiZr group and 97.8 % for the Ti Grade IV group. Crestal bone level changes at 60 months were not different in the test and control group (TiZr -0.60 ± 0.69 mm and Ti Grade IV -0.61 ± 0.83 mm; p = 0.96). The cumulative implant success rate after 60 months was 95.8 and 92.6 % for TiZr and Ti Grade IV, respectively. CONCLUSIONS After 60 months, the positive outcomes of the 36 month results for TiZr and Ti Grade IV implants were confirmed, with no significant differences with regard to crestal bone level change, clinical parameters and survival or success rates. TiZr implants performed equally well compared to conventional Ti Grade IV 3.3 mm diameter-reduced implants for mandibular removable overdentures. TRIAL REGISTRATION Registered on www.clinicaltrials.gov: NCT01878331.
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Affiliation(s)
- Frauke Müller
- Division of Gerodontology and Removable Prosthodontics, University of Geneva, Geneva, Switzerland.
| | | | - Stefano Storelli
- University of Milan, Dental Clinic, San Paolo Hospital, Milan, Italy.
| | - Marc Quirynen
- School of Dentistry, Catholic University Leuven, Leuven, Belgium.
| | - Stefan Hicklin
- University of Bern, School of Dental Medicine, Bern, Switzerland.
| | | | - Renzo Bassetti
- Cantonal Hospital Lucerne, Clinic for Oral and Maxillofacial Surgery, Lucerne, Switzerland.
| | - Martin Schimmel
- Division of Gerodontology and Removable Prosthodontics, University of Geneva, Geneva, Switzerland. .,University of Bern, School of Dental Medicine, Bern, Switzerland.
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Clinical and radiographic evaluation of new dental implant system: Results of a 3-year prospective study. J Dent Sci 2015; 11:29-34. [PMID: 30894942 PMCID: PMC6395157 DOI: 10.1016/j.jds.2014.11.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2014] [Revised: 09/13/2014] [Indexed: 11/24/2022] Open
Abstract
Background/purpose The aim of this study was to evaluate implant survival, crestal bone level changes, and clinical parameters of IDcam dental implants over a mean follow-up period of 3 years. Materials and methods Seventy-two patients, 32 females and 40 males, received 255 implants. Implant-supported metal-ceramic fixed restorations were inserted. Following completion of restorations, each patient was re-examined at 6-month intervals. Radiographic crestal bone level changes were calculated, as well as soft tissue parameters including pocket probing depth, bleeding on probing, plaque index, and gingival index. Examination results were recorded from 18 months to 42 months. Implant survival was estimated using the Kaplan-Meier method. Associations between implant survival and recorded variables were estimated using Cox proportional regression analysis. Results The Kaplan-Meier survival analysis demonstrated a cumulative survival rate of 97.6%. Three implants in three patients failed to osseointegrate at stage 2 surgery, and three implants in three patients were lost after loading. The mean marginal bone losses were 0.35 ± 0.14 mm, 0.47 ± 0.15 mm, and 0.58 ± 0.16 mm, as determined 6 months, 12 months, and 24 months after prosthetic loading, respectively. Cox proportional regression analysis revealed that the variables such as age, sex, type of the restoration, and implant region had no significant influence on implant failure (P > 0.05). Coefficients of correlation between implant survival and crestal bone loss, pocket probing depth, bleeding on probing, plaque index, and gingival index were found to be nonsignificant (P > 0.05). Conclusion Survival and radiographic and clinical assessments of implants after 2 years of function demonstrated promising results for an IDcam dental implant system.
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Stadlinger B, Belibasakis G, Bierbaum S. Implantatoberflächen und ihr Einfluss auf das periimplantäre Hartgewebe. ACTA ACUST UNITED AC 2014. [DOI: 10.1007/s12285-013-0388-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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