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Clinical Oral Implants Research

Hyun-Chang Lim, Yeojin Son, Ji-Youn Hong, Seung-Il Shin, Ui-Won Jung, Jong-Hyuk Chung
OBJECTIVE: To investigate the healing following sinus grafting in sites with a perforated schneiderian membrane repaired using a collagen membrane, compared to control sites without membrane perforation. MATERIALS & METHODS: Following elevation of the sinus membrane in 16 rabbits, each sinus was assigned to one of the following groups: (i) intentional schneiderian membrane perforation, followed by the placement of a collagen membrane and bone grafting (group SMP), (ii) bone grafting without a perforation of the schneiderian membrane and without a collagen membrane placement (control group)...
November 9, 2018: Clinical Oral Implants Research
Fernanda Vieira Ribeiro, Suzana Peres Pimentel, Monica Grazieli Corrêa, João Paulo Bortoli, Michel Reis Messora, Marcio Zaffalon Casati
OBJECTIVES: Innovative approaches capable to improve peri-implant bone repair are relevant in the presence of smoking, a risk factor for healing around implants. This study investigated the effect of resveratrol (RESV) on peri-implant repair and its influence on bone-related markers in rats submitted to cigarette smoking inhalation (CSI). MATERIALS AND METHODS: One titanium implant was inserted in each tibiae of rats assigned to: CSI+RESV(n:18); CSI+ placebo(n:18); Non-CSI(n:18)...
November 6, 2018: Clinical Oral Implants Research
Valerie Steiger-Ronay, Zvonimir Krcmaric, Patrick R Schmidlin, Philipp Sahrmann, Daniel B Wiedemeier, Goran I Benic
OBJECTIVE: To test the accuracy of measurement of interproximal peri-implant bone defects at titanium (Ti) and zirconium dioxide (ZrO2 ) implants by digital periapical radiography (PR) and cone beam computed tomography (CBCT). MATERIAL AND METHODS: A total of 18 models, each containing one Ti and one ZrO2 implant, were cast in dental stone. Six models each were allocated to following defect groups: A - no peri-implant defect, B - 1 mm width defect, C - 1.5 mm width defect...
November 2, 2018: Clinical Oral Implants Research
Zhaozhao Chen, Junying Li, Khaled Sinjab, Gustavo Mendonca, Haiyang Yu, Hom-Lay Wang
OBJECTIVE: To compare the accuracy of computer-guided surgery and freehand surgery on flapless immediate implant placement (IIP) in the anterior maxilla. MATERIAL AND METHODS: In this split-mouth design, 24 maxillary incisors in 8 human cadaver heads were randomly divided into two groups: computer-guided surgery (n=12) and freehand surgery (n=12). Preoperatively, cone-beam computed tomography (CBCT) scans were acquired, and all implants were planned with a software (Blue Sky Plan3)...
October 22, 2018: Clinical Oral Implants Research
Jeniffer Perussolo, André B Souza, Flávia Matarazzo, Ricardo P Oliveira, Mauricio G Araújo
OBJECTIVE: The purpose of the present prospective follow-up study was to evaluate the long-term influence of the peri-implant keratinized mucosa (KM) on marginal bone level (MBL), peri-implant tissues health and brushing discomfort. MATERIAL AND METHODS: Eighty patients were initially recruited during their maintenance visit from January to October 2013 and allocated in two groups according to KM width around implants: Wide Group (KM≥2 mm); and Narrow Group (KM<2 mm)...
October 22, 2018: Clinical Oral Implants Research
Frank R Kloss, Vincent Offermanns, Anita Kloss-Brandstätter
OBJECTIVES: The aim of this study was to compare three-dimensional alterations following the use of autogenous versus allogeneic onlay grafts for augmentation at single tooth defects. MATERIALS AND METHODS: Alveolar bone width at specific implant sites were assessed using sagittal and cross-sectional CBCT images prior grafting and at three subsequent time points. Twenty-one patients received autogenous bone blocks harvested from the retromolar region and another 21 patients received freeze-dried cancellous allogeneic bone blocks...
October 10, 2018: Clinical Oral Implants Research
Justin Ranaan, Seyed Hossein Bassir, Luciano Andrada, Ahmad Reza Shamshiri, Mohamed Maksoud, Rodney Raanan, Kevin Guze
OBJECTIVE: Slit-window technique is a lateral approach sinus floor elevation (SFE) procedure that utilizes a rigid resorbable membrane in conjunction with stabilizing bony slits to tent the Schneiderian membrane without addition of grafting materials. The aim of this randomized clinical trial was to compare clinical and radiographic outcomes of the Slit-window SFE with those of SFE with bone grafting. MATERIAL AND METHODS: Thirty-three patients with 38 edentulous sites were included...
October 3, 2018: Clinical Oral Implants Research
Mehmet Emre Benlidayi, Ufuk Tatli, Fariz Salimov, Hüseyin Can Tükel, Orcan Yüksel
OBJECTIVES: The aim of this study was to compare autogenous and allograft bone rings in surgically created vertical bone defects. MATERIAL AND METHODS: Four male, 1-year-old sheep were used in this study. In each sheep, eight vertical bone defects 7 mm in diameter were created using trephine drill in the iliac wing. Autogenous and allograft bone rings 5 mm in height and 7 mm in diameter were used for vertical augmentation around implants. The study consisted of four groups according to the bone ring type and amount of vertical augmentation, autogenous 2 mm, allograft 2 mm, autogenous 4 mm, and allograft 4 mm...
October 3, 2018: Clinical Oral Implants Research
Himanshu Arora, Saso Ivanovski
OBJECTIVES: This prospective study evaluated the impact of timing of placement (immediate and early) on the horizontal ridge dimensional changes, clinical and aesthetic outcomes of implants placed in single-tooth gaps in the anterior maxilla. MATERIALS AND METHODS: Implants were placed in single-tooth gaps in the anterior maxilla in 30 patients either immediately after extraction (Group A, n = 15) or after a healing period of 4-8 weeks (Group B, n = 15). In both groups implant placement was followed by a 3-4 month period of non-submerged healing, after which definitive crowns were placed...
October 3, 2018: Clinical Oral Implants Research
Fernando Suárez-López Del Amo, Carlos Garaicoa-Pazmiño, Tobias Fretwurst, Rogerio M Castilho, Cristiane H Squarize
OBJECTIVES: The presence of titanium (Ti) particles around dental implants has been reported in the literature for decades. The prospective presence of Ti debris on soft tissues surrounding dental implants has not been systematically investigated and remains to be explored. Hence, this review aimed to evaluate the origin, presence, characteristics, and location of Ti particles in relation to dental implants. MATERIAL AND METHODS: Literature searches were conducted by two reviewers independently based on the PRISMA guidelines...
October 2, 2018: Clinical Oral Implants Research
Yesi Xie, Huanxin Meng, Jie Han, Li Xu, Li Zhang, Wenjing Li
OBJECTIVES: To compare the periodontal and peri-implant conditions of Chinese patients with a history of moderate or severe periodontitis and periodontally healthy patients (PHP); to evaluate the influence of maintenance therapy frequency on the outcome of implant therapy. METHODS: 140 participants with 227 sand-blasted acidetched (SLA) implants were divided into three groups: PHP, moderate periodontally compromised patients (PCP) and severe PCP.. The three groups were further categorized into two groups based on the frequency of maintenance (MF): MF ≥ 1 per year and MF < 1 per year...
September 29, 2018: Clinical Oral Implants Research
Alberto Monje, Angel Insua, Florencio Monje, Fernando Muñoz, Giovanni E Salvi, Daniel Buser, Vivianne Chappuis
OBJECTIVES: To investigate the impact of progressive bone loss in an experimental peri-implantitis model in the dog upon the implant stability quotient (ISQ) measured in the course of induced and spontaneous conditions of disease, and to evaluate the association between the clinical parameters and ISQ. MATERIALS AND METHODS: Seventy-two implants were placed in 12 Beagle dogs. Of these, 36 implants in six dogs were assessed during ligature-induced peri-implantitis (three timepoints) and at one timepoint following a period of spontaneous progression...
September 28, 2018: Clinical Oral Implants Research
Gerardo La Monaca, Nicola Pranno, Susanna Annibali, Maria Paola Cristalli, Antonella Polimeni
OBJECTIVES: The aim of this study was to evaluate the 5-year clinical and radiographic outcomes following reconstructive therapy of peri-implantitis lesions using mineralized dehydrated bone allograft and resorbable membrane in the nonsubmerged mode of wound healing. MATERIALS AND METHODS: Thirty-four patients with at least one implant diagnosed with peri-implantitis were treated by mechanical debridement; chemical decontamination using hydrogen peroxide (3%), chlorhexidine (0...
September 28, 2018: Clinical Oral Implants Research
Jaume Escoda-Francolí, María Ángeles Sánchez-Garcés, Álvaro Gimeno-Sandig, Fernando Muñoz-Guzón, Joan R Barbany-Cairó, Llorenç Badiella-Busquets, Cosme Gay-Escoda
OBJECTIVE: This histomorphometric study compared bone regeneration potential of beta-tricalcium phosphate with fibronectin (β-TCP-Fn) in critical-sized calvarial defects (CSDs) in rats to assess whether fibronectin (Fn) improved new bone formation. MATERIAL AND METHODS: Critical-sized calvarial defects were created in 30 adult male Sprague Dawley rats, which were divided into four groups according to the time of euthanasia (6 or 8 weeks of healing) and type of filling (β-TCP-Fn/6 weeks, β-TCP/6 weeks, β-TCP-Fn/8 weeks and β-TCP/8 weeks)...
September 28, 2018: Clinical Oral Implants Research
Gabriel Mulinari-Santos, Fábio Roberto de Souza Batista, Franziska Kirchweger, Stefan Tangl, Reinhard Gruber, Roberta Okamoto
OBJECTIVE: Hypertension is not only associated with cardiovascular diseases but also with alterations in bone quality. Hypertension therefore might be a risk factor for osseointegration. Preclinical studies suggest that losartan, an angiotensin II receptor blocker widely used to treat hypertension, has a beneficial effect in graft consolidation. Here, we determine the effect of hypertension and losartan on osseointegration. METHODS: We used spontaneously hypertensive rats (SHR) and normotensive Wistar albinus rats receiving losartan (30 mg/kg, p...
September 28, 2018: Clinical Oral Implants Research
Priscilla Barbosa Ferreira Soares, Camilla Christian Gomes Moura, Clever Ricardo Chinaglia, Edgar Dutra Zanotto, Darceny Zanetta-Barbosa, Andreas Stavropoulos
PURPOSE: To evaluate the effect of surface functionalization with bioactive glass BSF18 on the osseointegration of sandblasted and dual acid-etched surface (AE) implants. METHODS AND MATERIALS: Forty Morse taper implants with an AE surface as controls (C) or with an AE surface functionalized with BSF18 (BF) were placed in the mandibles of 10 beagles. Implants were analysed after 2 and 4 weeks of healing. Implant stability quotient (ISQ) values were registered immediately after installation and prior to sacrifice...
September 28, 2018: Clinical Oral Implants Research
Alexander Rinner, Johannes Zschocke, Anna Schossig, Rebekka Gröbner, Heinrich Strobl, Ines Kapferer-Seebacher
OBJECTIVES: Periodontal Ehlers Danlos syndrome (pEDS) has recently been delineated as a molecularly defined cause of early severe periodontitis. Here we report that implant treatment failed in three affected individuals from one family. MATERIALS AND METHODS: Longitudinal data before and after implant treatment were examined for three individuals with genetically confirmed pEDS in the course of a large-scale pedigree analysis. RESULTS: Most detailed information was available for individual 1 in whom first periodontal bone loss was diagnosed at age 16 years...
September 25, 2018: Clinical Oral Implants Research
André Barbisan Souza, AbdulMonem Alshihri, Peer W Kämmerer, Maurício G Araújo, German O Gallucci
OBJECTIVE: The aim of this study was to assess the effect of different abutment configurations on peri-implant soft and hard tissue healing. MATERIALS AND METHODS: Two-piece dental implants, 3.5 mm in diameter and 8 mm in length, were placed in four beagle dogs. Two different transmucosal healing abutment configurations were randomly selected: one with a wide emergence profile (WE) (45° angulation with implant long axis) and the other with a narrow emergence profile (NE) (15° angulation with implant long axis)...
September 23, 2018: Clinical Oral Implants Research
Ignacio Sanz-Martín, María Permuy, Fabio Vignoletti, Javier Nuñez, Fernando Muñoz, Mariano Sanz
OBJECTIVES: To study the hard and soft tissue volume after placing immediate (IMI) or delayed implants (DLI) with a triangular coronal macro-design (Test/T) or a conventional cylindrical design (Control/C). MATERIAL AND METHODS: T/C implants were inserted in healed ridges or in fresh extraction sockets of eight beagle dogs. Biopsies were processed for Micro-CT analysis and dental stone casts were optically scanned to obtain STL files revealing the soft tissue contours at 12 weeks...
September 23, 2018: Clinical Oral Implants Research
Daniel S Thoma, Karin Wolleb, Stefan P Bienz, Daniel Wiedemeier, Christoph H F Hämmerle, Irena Sailer
OBJECTIVES: To assess the early histological, microbiological, radiological, and clinical response to cemented and screw-retained all-ceramic single-tooth implant-supported reconstructions. MATERIALS AND METHODS: Patients with single-tooth implants were randomly allocated to receive a cemented lithium disilicate crown on a customized zirconia abutment (CEM) or a screw-retained crown with a directly veneered zirconia abutment (SCREW). At the screening visit, at crown insertion and at the 6-month follow-up, clinical parameters were measured at the implant and the contralateral tooth...
September 20, 2018: Clinical Oral Implants Research
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