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Implant Dentistry

Ling He, Deli Li, Jiwu Zhang, Xiucheng Li, Songhe Lu, Zhihui Tang
OBJECTIVE: The aim of this study was to evaluate cross-sectional area of the abutments, strain distribution in the periimplant bone, stress in the abutments and dental root-analog implant by different abutment design under different loading conditions, through three-dimensional finite element analysis. METHODS: Two three-dimensional finite element models were established. Two types of abutments, oval cross section abutment (OCSA) and circular cross section abutment (CCSA) were designed, keeping the size of the thinnest implant wall 0...
October 13, 2016: Implant Dentistry
Roberto Marra, Alessandro Acocella, Rispoli Alessandra, Scott D Ganz, Andrea Blasi
OBJECTIVE: The purpose of this report is to compare satisfaction of patients rehabilitated with full-mouth fixed prostheses using computer-aided flapless implant placement and immediate loading with patients rehabilitated with conventional removable prostheses. MATERIALS AND METHODS: The study included 30 consecutive fully edentulous patients who received 312 implants and 30 matched controls treated with conventional removable prostheses. Mandible and maxilla were treated in the same surgical session with computer-guided flapless approach using NobelGuide protocol...
October 4, 2016: Implant Dentistry
Mohammed Alshehri, Fahad Alshehri
PURPOSE: The aim of this review was to assess the effect of implant shape (tapered vs cylindrical) on the survival of dental implants placed in the posterior maxilla. METHODS: Databases were searched from 1977 up to and including February 2015 using various key words. Only original clinical studies were included. Experimental studies, letters to the editor, review articles, case reports, and unpublished literature were excluded. The pattern of the present review was customized to mainly summarize the relevant information...
October 4, 2016: Implant Dentistry
Rachel A Sheridan, Ann M Decker, Alexandra B Plonka, Hom-Lay Wang
PURPOSE: Occlusal overload may cause implant biomechanical failures, marginal bone loss, or even complete loss of osseointegration. Thus, it is important for clinicians to understand the role of occlusion in implant long-term stability. This systematic review updates the understanding of occlusion on dental implants, the impact on the surrounding peri-implant tissues, and the effects of occlusal overload on implants. Additionally, recommendations of occlusal scheme for implant prostheses and designs were formulated...
October 4, 2016: Implant Dentistry
Claudia Dellavia, Michele Giammattei, Daniela Carmagnola, Federica Musto, Elena Canciani, Matteo Chiapasco
PURPOSE: The aim of this work was to compare histologically bone biopsies obtained during dental implant placement in atrophic jaws reconstructed with fresh-frozen bone (FFB) or autologous bone blocks. MATERIALS AND METHODS: Twenty partially or totally edentulous patients were treated either with iliac crest FFB grafts (14 patients; group A) or with iliac crest autografts (6 patients; group B). Seven to 9 months later, dental implants were placed in the reconstructed jaws and bone biopsies were harvested...
September 28, 2016: Implant Dentistry
Janghyun Paek, Yi-Hyung Woo, Hyeong-Seob Kim, Ahran Pae, Kwantae Noh, Hyeonjong Lee, Kung-Rock Kwon
PURPOSE: The aim of this study was to determine the stability of computer-aided design and manufacturing (CAD/CAM) and prefabricated abutment by measuring removal torque before and after cyclic loading. MATERIALS AND METHODS: Three types of fixture and 2 types of abutments were used. Removable torque was measured after cyclic loading for 5000 cycles between 25 and 250 N for each group. The same procedure was performed twice. RESULTS: First, removal torque values (Newton centimeter) were measured for stock versus custom abutments as follows: group 1: 27...
August 26, 2016: Implant Dentistry
Stefano Bianconi, Paolo Bozzoli, Massimo Del Fabbro
PURPOSE: Additional grafting procedures for the treatment of extremely atrophic jaws may be demanding, expensive, and sometimes require long time and multiple surgical sessions, which may reduce patient's acceptance and quality of life. This study evaluated the outcomes of 10 patients with extensive alveolar bone defects in the posterior jaws, treated in a single surgical session with grafting and implants. MATERIALS AND METHODS: Ten consecutive patients were treated within 3 months of extraction...
August 23, 2016: Implant Dentistry
Daisuke Ueno, Takatoshi Nagano, Tsuneaki Watanabe, Satoshi Shirakawa, Akihiro Yashima, Kazuhiro Gomi
INTRODUCTION: The purpose of this study was to examine whether the width of keratinized mucosa (WKM) is associated with the health status of tissue surrounding dental implants and the contralateral teeth. MATERIALS AND METHODS: Sixty patients who received implant-fixed unilateral prostheses in the premolar or molar region were recruited for the study. The following parameters were measured for each implant and contralateral tooth: WKM, gingival index (GI), probing pocket depth (PPD), bleeding on probing (BOP), pus discharge, plaque accumulation (PA), gingival recession (GR), and difficulty of brushing...
August 19, 2016: Implant Dentistry
Neda Moslemi, Aysan Shahnaz, Samane Masoumi, Sepehr Torabi, Solmaz Akbari
PURPOSE: The aim of this study was to review the scientific evidence about the laser osteotomy in implant bed preparation. METHODS: An electronic search was performed on relevant English articles up to April 2016 in the PubMed, Scopus, and Google Scholar databases. RESULTS: Twenty-two articles (1 clinical, 13 animal, and 8 ex vivo studies) were included. Implant sites prepared by erbium family lasers and drill showed comparable results regarding the percentage of bone-to-implant contact, values of biomechanical tests, and healing process...
August 19, 2016: Implant Dentistry
Juliano Milanezi de Almeida, Henrique Rinaldi Matheus, David Jonathan Rodrigues Gusman, Paula Lazilha Faleiros, Nathália Januário de Araújo, Vivian Cristina Noronha Novaes
OBJECTIVE: This study aimed to perform a systematic review of the effectiveness of nonsurgical treatment associated with different adjuvant therapies on periimplantitis. MATERIALS AND METHODS: Different individuals, following a research process, performed a network research of controlled and randomized controlled clinical trials on PubMed, Embase/MEDLINE, with 20 years' time constraint and the last search in January 2016. RESULTS: From 108 articles found by the first search, they analyzed 10 full texts, and in none did they find a standard control group...
August 19, 2016: Implant Dentistry
Arturo Sánchez-Pérez, Alexandra Carla Boracchia, Pía López-Jornet, Paula Boix-García
PURPOSE: To analyze the anatomical findings and alterations of the maxillary sinus in asymptomatic patients observed by cone beam computed tomography. MATERIALS AND METHODS: A cross-sectional retrospective study of the anatomical variations and alterations of the maxillary sinus was made in 160 patients-71 males (44.3%) and 89 females (55.6%), with an age range of 18 to 74 years-measuring the thickness of the Schneiderian membrane and the cortical thickness of the lower margin of the maxillary sinus (in its most caudal portion), and correlations among the different study variables were assessed...
August 18, 2016: Implant Dentistry
Khalid E El-Kholey, Aamna Elkomy
OBJECTIVES: To test the hypothesis that there would be no difference in heat generation by reducing the number of drills during the implant site preparation relative to conventional drilling sequence. METHODS: A total of 80 implant site preparations with 2 different diameters (5.6 and 6.2 mm) were performed on bovine ribs. Within the same diameter group, half of the preparations were performed by a simplified drilling procedure (pilot drill + final diameter drill) and the other half using the conventional drilling protocol, where multiple drills of increasing diameter were utilized...
August 18, 2016: Implant Dentistry
Alejandro Sierra-Rebolledo, Marvis Allais-Leon, Paul Maurette-OʼBrien, Cosme Gay-Escoda
PURPOSE: A biomechanical study of the primary apical stability obtained in tapered implants through the reduction of final drilling dimensions in different bone density models. MATERIAL AND METHODS: An in vitro study of maximum insertion torque and primary stability based on the resonance frequency analysis (RFA) of 24 conical implants measuring 13 mm in length and 3.75 and 4.20 mm in diameter, randomly inserted in 10-mm sockets prepared in 4 polyurethane blocks with a density of 15, 20, 30, and 40 pounds per cu ft, respectively, reducing the diameter of the final drill at constant speed (400 rpm) to obtain exclusive 4 mm anchoring of the apical third of each implant...
August 18, 2016: Implant Dentistry
Rucha Shah, Raison Thomas, Tarun Kumar, Dhoom Singh Mehta
BACKGROUND: Retrograde periimplantitis (RPI) is the inflammatory disease that affects the apical part of an osseointegrated implant while the coronal portion of the implant sustains a normal bone-to-implant interface. The aim of the current study was to assess the intraexaminer and interexaminer reliability of a proposed new classification system for RPI. MATERIALS AND METHODS: After thorough electronic literature search, 56 intraoral periapical radiographs (IOPA) of implants with RPI were collected and were classified by 2 independent reviewers as per the new classification system into one of the 3-mild, moderate, and advanced-classes based on the amount of bone loss from the apex of the implant to the most coronal part as a percentage of the total implant length...
August 18, 2016: Implant Dentistry
Javier Carreño Carreño, Antonio Aguilar-Salvatierra, Gerardo Gómez-Moreno, Elena María García Carreño, María Luisa Menéndez López-Mateos, Vittoria Perrotti, Adriano Piattelli, José Luis Calvo-Guirado, Mario Menéndez-Núñez
OBJECTIVE: A wide range of surgical techniques are available for maxillary sinus augmentation. This review aimed to determine which techniques have achieved the highest success rates and so offer the greatest predictability. MATERIALS AND METHODS: A systematic literature review was performed using the PubMed, MEDLINE, and Scopus databases, identifying clinical trials that assessed different surgical techniques for maxillary sinus augmentation, and registered the success rates of subsequent implant placement...
August 18, 2016: Implant Dentistry
Mohammed Jasim Al-Juboori
PURPOSE: The objective of this study was to compare the reliability and results of 2 flap techniques, flapless (FL) and full-thickness (FT) flap, during implant placement. MATERIALS AND METHODS: Online and hand searches of the literature published were conducted to identify studies examining different flap techniques on clinical and histological outcomes. The search terms used, alone or in combination, were "flapless," "full-thickness flap," "crestal bone resorption," "gingival blood circulation," and "biological width...
August 18, 2016: Implant Dentistry
Charles Marin, Estevam Bonfante, Rodrigo Granato, Rodrigo Neiva, Luiz Fernando Gil, Heloisa Fonseca Marão, Marcelo Suzuki, Paulo G Coelho
PURPOSE: This study investigated the effect of the osteotomy diameter for implant placement torque and its effect on the osseointegration. MATERIALS AND METHODS: Eight male beagle dogs received 48 implants (3.75 mm × 10 mm) in their right and left radius, 3 implants per side and allowed to heal for 3 weeks. Three experimental groups were evaluated. Group 1: implant with an undersized osteotomy of 3.0 mm; group 2: osteotomy of 3.25 mm, and group 3: osteotomy of 3...
August 10, 2016: Implant Dentistry
Manabu Ishijima, Amirreza Ghassemi, Pooya Soltanzadeh, Miyuki Tanaka, Kourosh Nakhaei, Wonhee Park, Makoto Hirota, Naoki Tsukimura, Takahiro Ogawa
OBJECTIVES: This study evaluated the effect of photofunctionalization on osseointegration under the biologically adverse conditions of aging. MATERIALS: First of all, bone marrow-derived osteoblastic cells from young (8 weeks old) and aged (15 months old) rats were biologically characterized. Then, the osteoblasts from aged rats were seeded on titanium discs with and without photofunctionalization, and assessed for initial cell attachment and osteoblastic functions...
August 10, 2016: Implant Dentistry
Alberto Maria Saibene, Carlotta Pipolo, Alberto Maccari, Paolo Lozza, Matteo Chiapasco, Alberto Scotti, Roberto Borloni, Giovanni Felisati
INTRODUCTION: Sinonasal anatomical anomalies and inflammatory conditions may reduce success rates of maxillary sinus elevation (MSE) procedures used to allow implant placement in the atrophic posterior maxilla. Approaches combining endoscopic sinus surgery (ESS) and MSE were firstly proposed by our group and have already been described in the literature. This article aims to re-evaluate the procedure in a larger sample of patients comparing results and indications with the pertaining literature...
October 2016: Implant Dentistry
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October 2016: Implant Dentistry
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