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Clinical Oral Implants Research

Cristiano Tomasi, Mauro Donati, Denis Cecchinato, Isacco Szathvary, Enrico Corrà, Jan Lindhe
OBJECTIVE: To examine if (i) characteristics of the fresh extraction socket site influenced subsequent dimensional alterations and (ii) placement of deproteinized bovine mineral in the socket affected volumetric change during healing. MATERIALS AND METHODS: Twenty seven subjects and 28 extraction sites were included. Immediately after the removal of the tooth and after 6 months of healing, stone and virtual models of the jaw were produced. A cone beam computerized tomography scan was obtained immediately after extraction and the thickness of the buccal bone wall at the extraction site was measured...
March 13, 2018: Clinical Oral Implants Research
Irena Sailer, Asgeir G Asgeirsson, Daniel S Thoma, Vincent Fehmer, Thor Aspelund, Mutlu Özcan, Bjarni E Pjetursson
BACKGROUND: There is limited knowledge regarding the strength of zirconia abutments with internal and external implant abutment connections and zirconia abutments supported by a titanium resin base (Variobase, Straumann) for narrow diameter implants. OBJECTIVES: To compare the fracture strength of narrow diameter abutments with different types of implant abutment connections after chewing simulation. MATERIAL AND METHODS: Hundred and twenty identical customized abutments with different materials and implant abutment connections were fabricated for five groups: 1-piece zirconia abutment with internal connection (T1, Cares-abutment-Straumann BL-NC implant, Straumann Switzerland), 1-piece zirconia abutment with external hex connection (T2, Procera abutment-Branemark NP implant, Nobel Biocare, Sweden), 2-piece zirconia abutments with metallic insert for internal connection (T3, Procera abutment-Replace NP implant, Nobel Biocare), 2-piece zirconia abutment on titanium resin base (T4, LavaPlus abutment-VarioBase-Straumann BL-NC implant, 3M ESPE, Germany) and 1-piece titanium abutment with internal connection (C, Cares-abutment-Straumann BL-NC implant, Straumann, Switzerland)...
March 11, 2018: Clinical Oral Implants Research
Hiroki Takata, Futoshi Komine, Junichi Honda, Markus B Blatz, Hideo Matsumura
OBJECTIVES: The purpose of this in vitro study was to evaluate fracture loads of implant-supported zirconia-based prostheses fabricated with different veneer materials (resin-based material and lithium disilicate ceramics). MATERIAL AND METHODS: Forty-four zirconia-based molar prostheses were fabricated on dental implants and divided into four groups (n = 11): zirconia-based prostheses veneered with feldspathic porcelain (ZVF), zirconia-based prostheses bonded with the lithium disilicate glass-ceramic veneer (ZBD), zirconia-based prostheses veneered with indirect composite resin (ZVC), and zirconia-based prostheses bonded with composite materials fabricated from a CAD/CAM resin block (ZBC)...
February 27, 2018: Clinical Oral Implants Research
Stuart J Froum, Sang-Choon Cho, Takanori Suzuki, Paul Yu, Patricia Corby, Ismael Khouly
OBJECTIVES: To evaluate the changes in marginal bone levels (MBL) and soft tissue dimension around platform-switched implants with the implant-abutment junction (IAJ) placed at the crest or 1.5-2 mm subcrestally. MATERIALS AND METHODS: In all, 96 platform-switched implants were placed in either the posterior maxilla or mandible in 48 partially edentulous patients in a split-mouth study. All implants were provisionally restored after 4-5 months and definitively after 6 months (T6)...
February 23, 2018: Clinical Oral Implants Research
Himanshu Arora, Saso Ivanovski
OBJECTIVE: To evaluate the impact of the timing of restoration on clinical and aesthetic outcomes following immediate implant placement in the maxillary aesthetic zone. MATERIAL AND METHODS: Forty patients (16 males, 24 females) with a mean age of 50.55 ± 12.79 years (range 19-74) who had a single maxillary anterior tooth replaced by an immediate implant were included in this study. Twenty patients had their implant restored immediately with a provisional restoration (Group A), while the other 20 patients had a delayed restoration placed after 3-4 months of non-submerged healing (Group B)...
February 16, 2018: Clinical Oral Implants Research
Luigi Canullo, Marco Tallarico, Daniele Botticelli, Karol Alí Apaza Alccayhuaman, Evandro Carneiro Martins Neto, Samuel Porfirio Xavier
OBJECTIVE: To histologically assess the hard and soft tissue changes after insertion of cleaned and activated titanium implants using plasma of argon. MATERIALS AND METHODS: Eight dogs were included in this study. The mandibular premolars and first molars were extracted. For each hemi-mandible, four implants, 7 mm long and 3.3 mm of diameter, with a ZirTi surface were used. The surface of two implants was randomly treated with argon plasma (test), while the other two implants were left untreated (control)...
February 16, 2018: Clinical Oral Implants Research
Ulrike Kuchler, Tina Rybaczek, Toni Dobask, Patrick Heimel, Stefan Tangl, Jessica Klehm, Matthias Menzel, Reinhard Gruber
OBJECTIVES: Collagen membranes are not limited to be occlusive barriers as they actively support bone regeneration. However, the impact of bone-derived growth factors on their osteoconductive competence has not been examined. METHODS: Twenty adult Sprague Dawley rats were included in the study. Calvaria defects with a diameter of five millimeter were created. The defect was covered with one layer of a collagen membrane previously soaked in conditioned medium of porcine bone chips or in culture medium alone...
February 16, 2018: Clinical Oral Implants Research
Paula Girbés-Ballester, Jose Viña-Almunia, Jose C Balaguer-Martí, Miguel Peñarrocha-Diago, David Peñarrocha-Oltra
PURPOSE: To evaluate the effect of incision design in implant surgery on interproximal bone loss of posterior teeth adjacent to interdental single implants, comparing intrasulcular and paramarginal incision. A further aim was to assess the influence of the incision technique on peri-implant bone remodeling. MATERIALS AND METHODS: A controlled randomized clinical trial was carried out in a University Clinic. All the patients received an interdental posterior single implant...
February 16, 2018: Clinical Oral Implants Research
Denis Cecchinato, Massimiliano Marino, Marco Toia, Francesca Cecchinato, Jan Lindhe
OBJECTIVE: This study was performed to determine whether the distance between an implant and a tooth present in an inter-proximal unit influenced the amount of marginal bone loss that occurred at the two facing (adjacent) surfaces. MATERIALS AND METHODS: One hundred and eighty patients with a total of 278 inter-proximal units were included. Radiographs of implants that also included adjacent (facing) natural tooth/teeth were digitalized, and various linear measurements were performed using a software program...
February 10, 2018: Clinical Oral Implants Research
Jeffrey Garcia, Austin Dodge, Paul Luepke, Hom-Lay Wang, Yvonne Kapila, Guo-Hao Lin
AIMS: This review aimed at investigating the effect of membrane exposure on guided bone regeneration (GBR) outcomes at peri-implant sites and edentulous ridges. MATERIAL AND METHODS: Electronic and manual literature searches were conducted by two independent reviewers using four databases, including MEDLINE, EMBASE, Web of Science, and Cochrane Central Register of Controlled Trials, for articles up to February 2017. Articles were included if they were human clinical trials or case series reporting outcomes of GBR procedures with and without membrane exposure...
January 24, 2018: Clinical Oral Implants Research
Jung-Seok Lee, Jae-Kook Cha, Daniel S Thoma, Ui-Won Jung
OBJECTIVE: This study of a human autopsy case aimed to characterize the histologic and micro-computed tomographic results of maxillary sinus augmentation using a synthetic bone substitute and simultaneous implant placement at 6 years. MATERIAL AND METHODS: This report is based on the whole-body donation of a 62-year-old male patient who died due to bladder cancer. Implants had been placed in conjunction with sinus augmentation using a mixture of biphasic calcium phosphate and autogenous bone into both maxillary sinuses 6 years prior to the body donation...
January 18, 2018: Clinical Oral Implants Research
Jae-Kook Cha, Ui-Won Jung, Daniel S Thoma, Christoph H F Hämmerle, Ronald E Jung
OBJECTIVES: The objective of this study was to determine the effect of bone morphogenetic protein-2 (BMP-2) mixed with either polyethylene glycol hydrogel or synthetic bone substitute (SBS) on new bone formation in peri-implant dehiscence defects after 16 weeks of healing. MATERIALS AND METHODS: A guided bone regeneration procedure was performed in box-type peri-implant defects that were surgically prepared in six beagle dogs. The following four experimental groups were used (i) control (no graft), (ii) SBS+hydrogel, (iii) SBS+BMP-2/hydrogel and (iv) BMP-2/SBS+hydrogel...
January 17, 2018: Clinical Oral Implants Research
Wafa Ahmed Kashbour, Nikki S Rousseau, James Mark Thomason, Janice Sarah Ellis
OBJECTIVES: To explore patients' thoughts and perceptions of information provision regarding dental implant treatment. METHODS: This generic qualitative study involved 38 semi-structured face-to-face and telephone interviews with 34 participants, who were at different stages of dental implant treatment. The interviews were transcribed verbatim. The data collection and coding process followed the principles of qualitative thematic analysis. RESULTS: Clinical sources of information were generally trusted by patients; however, patients clearly lacked information relative to their own specific situation, concerns and preferences, and this may lead to patients' reliance on other general sources of information...
January 16, 2018: Clinical Oral Implants Research
Marc Balmer, Benedikt C Spies, Kirstin Vach, Ralf-Joachim Kohal, Christoph H F Hämmerle, Ronald E Jung
AIM: The aim of the present investigation was to evaluate clinically and radiographically the outcome of zirconia oral implants after 3 years in function. MATERIALS AND METHODS: In 60 patients in need of either a single-tooth replacement or a three-unit fixed dental prosthesis (FDP), a total of 71 one-piece zirconia implants were placed and immediately restored with temporary fixed prostheses. After a period of at least 2 months in the mandible and at least 4 months in the maxilla, zirconia-based reconstructions were cemented...
January 12, 2018: Clinical Oral Implants Research
Simone F M Janner, Michael Gahlert, Dieter D Bosshardt, Stefan Roehling, Stefan Milz, Frank Higginbottom, Daniel Buser, David L Cochran
OBJECTIVE: To evaluate the bone response to a two-piece zirconia implant in comparison with a control titanium implant in the canine mandible 4 and 16 weeks after restoration. MATERIAL AND METHODS: Zirconia and titanium implants were alternately placed bilaterally in healed mandibular molar and premolar sites of five canines. Full-ceramic single-tooth restorations were cemented after 6 weeks of transmucosal healing, allowing for full functional loading of the implants...
December 30, 2017: Clinical Oral Implants Research
Robert Noelken, Maximilian Moergel, Martin Kunkel, Wilfried Wagner
OBJECTIVES: As the 2-year results for immediately inserted and provisionalized implants have been reported, it remained an open issue, whether the initially high success rates and the esthetic outcome remain stable for longer observation periods. Therefore, this prospective study examines the 5-year hard and soft tissue changes at implants placed in the anterior maxilla. MATERIAL AND METHODS: Meanwhile, 37 microthreaded implants were placed in 21 patients into extraction sockets with and without facial bone deficiencies by a flapless approach...
March 2018: Clinical Oral Implants Research
(no author information available yet)
No abstract text is available yet for this article.
March 2018: Clinical Oral Implants Research
Ronald E Jung, Lisa Heitz-Mayfield, Frank Schwarz
OBJECTIVES: Working Group 2 at the 2nd Consensus Meeting of the Osteology Foundation had a focus on the influence of vertical implant placement on papilla height at single implants adjacent to teeth and on the inter-implant mucosa fill at two adjacent implants in the anterior maxilla. MATERIALS AND METHODS: Two systematic reviews were prepared in advance of the consensus meeting. Due to the heterogeneity among the studies with regard to study design, study population, method of assessment, meta-analyses were not possible...
March 2018: Clinical Oral Implants Research
Mariano Sanz, William V Giannobile
No abstract text is available yet for this article.
March 2018: Clinical Oral Implants Research
Daniel S Thoma, Nadja Naenni, Elena Figuero, Christoph H F Hämmerle, Frank Schwarz, Ronald E Jung, Ignacio Sanz-Sánchez
OBJECTIVE: To review the dental literature in terms of soft tissue augmentation procedures and their influence on peri-implant health or disease in partially and fully edentulous patients. METHODS: A MEDLINE search from 1966 to 2016 was performed to identify controlled clinical studies comparing soft tissue grafting versus no soft tissue grafting (maintenance) or two types of soft tissue grafting procedures at implant sites. The soft tissue grafting procedures included either an increase of keratinized tissue or an increase of the thickness of the peri-implant mucosa...
March 2018: Clinical Oral Implants Research
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