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Clinical Implant Dentistry and related Research

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https://www.readbyqxmd.com/read/28631408/resonance-frequency-analysis-of-dental-implants-placed-at-the-posterior-maxilla-varying-the-surface-treatment-only-a-randomized-clinical-trial
#1
Marcelo M Novellino, Newton Sesma, Piero R Zanardi, Dalva C Laganá
BACKGROUND: Chemical modifications of the dental implant surface that improve the wettability result in a faster and better osseointegration. PURPOSE: The aim of this randomized clinical trial was to evaluate the implant stability quotient (ISQ) of implants with similar designs, treated with 2 surfaces, sandblasted acid-etched (SAE) and hydrophilic SAE, within the initial 16 weeks of healing. MATERIAL AND METHODS: A total of 64 implants (32 SAE-control group and 32 modified SAE-test group) with the same design, length, and diameter (conical and compressive, 4...
June 20, 2017: Clinical Implant Dentistry and related Research
https://www.readbyqxmd.com/read/28631287/incidental-findings-of-implant-complications-on-postimplantation-cbcts-a-cross-sectional-study
#2
Danielle Clark, Horia Barbu, Adi Lorean, Eitan Mijiritsky, Liran Levin
BACKGROUND: Survival rates of dental implants are reported to be very high and seem to indicate minimal complications related to dental implants. PURPOSE: The aim of this report was to evaluate in a cross-sectional study the prevalence of implant positioning complications as appears in postimplantation Cone-Beam Computerized Tomography (CBCT) in two of the major imaging facilities in Bucharest, Romania. METHODS: Demographic and implant data was collected from two of the three main CBCT facilities in Bucharest, Romania...
June 20, 2017: Clinical Implant Dentistry and related Research
https://www.readbyqxmd.com/read/28608504/biophysical-regulation-of-osteotomy-healing-an-animal-study
#3
Liao Wang, Maziar Aghvami, John Brunski, Jill Helms
BACKGROUND: Osteotomies have been performed for centuries yet there remains a remarkable lack of consensus on optimal methods for cutting bone. There is universal agreement, however, that preserving cell viability is critical. PURPOSE: To identify mechanobiological parameters influencing bone formation after osteotomy site preparation. MATERIALS AND METHODS: A murine maxillary osteotomy model was used to evaluate healing. Computational modeling characterized stress and strain distributions in the osteotomy, as well as the magnitude and distribution of heat generated by drilling...
June 13, 2017: Clinical Implant Dentistry and related Research
https://www.readbyqxmd.com/read/28608498/on-stress-strain-shielding-and-the-material-stiffness-paradigm-for-dental-implants
#4
Raoof Korabi, Keren Shemtov-Yona, Daniel Rittel
BACKGROUND: Stress shielding considerations suggest that the dental implant material's compliance should be matched to that of the host bone. However, this belief has not been confirmed from a general perspective, either clinically or numerically. PURPOSE: To characterize the influence of the implant stiffness on its functionality using the failure envelope concept that examines all possible combinations of mechanical load and application angle for selected stress, strain and displacement-based bone failure criteria...
June 13, 2017: Clinical Implant Dentistry and related Research
https://www.readbyqxmd.com/read/28608435/cad-cam-fabricated-ceramic-implant-supported-single-crowns-made-from-lithium-disilicate-final-results-of-a-5-year-prospective-cohort-study
#5
Benedikt Christopher Spies, Stefano Pieralli, Kirstin Vach, Ralf-Joachim Kohal
BACKGROUND: All-ceramic bilayer systems suffer from technique-sensitivity, resulting in increased technical complication rates. This might be overcome by monolithic reconstructions, facilitating digital workflows. PURPOSE: To evaluate the clinical and patient-reported outcome of CAD/CAM-fabricated implant-supported single crowns (ISCs) made of lithium disilicate (LS2 ) cemented on ceramic implants 5 years after implant installation. MATERIALS AND METHODS: Twenty-four patients were included in the study...
June 13, 2017: Clinical Implant Dentistry and related Research
https://www.readbyqxmd.com/read/28608398/histomorphometric-and-immunohistochemical-assessment-of-runx2-and-vegf-of-biogran%C3%A2-and-autogenous-bone-graft-in-human-maxillary-sinus-bone-augmentation-a-prospective-and-randomized-study
#6
Rodrigo Dos Santos Pereira, Juliana Dreyer Menezes, João Paulo Bonardi, Geraldo Luiz Griza, Roberta Okamoto, Eduardo Hochuli-Vieira
BACKGROUND: Few studies have been conducted to assess new bone formation using Biogran, a bioactive glass, in maxillary sinus bone augmentation through a prospective and randomized evaluation. Moreover, there are no studies that evaluate cellular behavior by immunohistochemical assessment for osteoblastic and vascular activity during bone repair. PURPOSE: The aim of this study is to compare new bone formation and cellular behavior with Biogran alone, a 1:1 combination of Biogran and autogenous bone graft, and autogenous bone graft alone in human maxillary sinuses...
June 13, 2017: Clinical Implant Dentistry and related Research
https://www.readbyqxmd.com/read/28580654/a-prospective-randomized-controlled-trial-of-two-window-versus-solo-window-technique-by-lateral-sinus-floor-elevation-in-atrophic-posterior-maxilla-results-from-a-1-year-observational-phase
#7
Huajie Yu, Lixin Qiu
BACKGROUND: Implant failures are more common when multiple missing posterior teeth need lateral sinus floor elevation owing to inadequate tissue maturation after grafting. Effects of lateral window dimensions on vital bone formation have rarely been compared. PURPOSE: To compare endo-sinus bone formation between two- and solo-window techniques to rehabilitate multiple missing posterior teeth that need substantial augmentation. METHODS AND MATERIALS: Patients with severely atrophic posterior maxilla were randomized to receive lateral sinus floor elevation via solo or two bony windows...
June 5, 2017: Clinical Implant Dentistry and related Research
https://www.readbyqxmd.com/read/28557376/comparison-between-tapered-and-cylindrical-implants-in-the-posterior-regions-of-the-mandible-a-prospective-randomized-split-mouth-clinical-trial-focusing-on-implant-stability-changes-during-early-healing
#8
Janine Waechter, Marina de Matos Madruga, Luiz Carlos do Carmo Filho, Fábio Renato Manzolli Leite, André Ribeiro Schinestsck, Fernanda Faot
BACKGROUND: Companies affirm that tapered implants show adequate initial stability, while their installation in the lower arch is uncommon in clinical practice. PURPOSE: To compare the clinical outcomes of tapered and cylindrical implants and to study their effect on bone site characteristics and peri-implant health during healing. MATERIALS AND METHODS: The implant site dimensions were assessed by linear measurements using CBCT prior to the installation of 40 implants in the posterior mandible (20 tapered and 20 cylindrical)...
May 29, 2017: Clinical Implant Dentistry and related Research
https://www.readbyqxmd.com/read/28557370/hybrid-and-fully-etched-surface-implants-in-periodontally-healthy-patients-a-comparative-retrospective-study-on-marginal-bone-loss
#9
Sergio Spinato, Fabio Bernardello, Paolo Sassatelli, Davide Zaffe
BACKGROUND: Human studies on implants with the same design but with different surfaces are lacking at the present time. PURPOSE: The aim of this study was to compare the survival rate of and marginal bone loss (MBL) around 2 types of implants with the same design, but with different surfaces: fully "sandblasted and double-etched" (SDE) implants and hybrid (H) implants, with an apical SDE-surface and a coronal machined-surface. MATERIALS AND METHODS: The SDE- and H-surfaces were previously analyzed under SEM and profilometer...
May 29, 2017: Clinical Implant Dentistry and related Research
https://www.readbyqxmd.com/read/28556531/effects-of-uncontrolled-periodontitis-on-marginal-bone-alterations-around-implants-a-case-control-study
#10
Xin Wang, Lei Qin, Chi Lei, Yu Li, Dehua Li
BACKGROUND: The hypothesis of bacterial infection initiating marginal bone loss around dental implant in analogy with natural tooth is still in debate. PURPOSE: The aim of this retrospective study was to investigate the effects of uncontrolled periodontitis on marginal bone alterations around implants compared with the periodontal health group at a mean follow-up of at least 6 years. MATERIALS AND METHODS: Thirty consecutive uncontrolled periodontally compromised patients (PCP) and 30 periodontally healthy patients (PHP), with a total of 96 Straumann implants (PCP = 55, PHP = 41) were matched for age, gender, smoking, and implant characteristics...
May 29, 2017: Clinical Implant Dentistry and related Research
https://www.readbyqxmd.com/read/28556476/neurophysiological-changes-associated-with-implant-associated-augmentation-procedures-in-the-lower-jaw
#11
Amely Hartmann, Claudia Welte-Jzyk, Marcus Seiler, Monika Daubländer
BACKGROUND: Neurophysiological changes after oral and maxillofacial surgery remain one of the topics of current research. PURPOSE: This study evaluated if implant placement associated with augmentation procedures increases the possibility of sensory disturbances or result in impaired quality of life during the healing period. MATERIAL AND METHODS: Patients who had obtained an implant placement in the lower jaw in combination with augmentation procedures were examined by implementing a comprehensive Quantitative Sensory Testing (QST) protocol for extra- and intraoral use...
May 29, 2017: Clinical Implant Dentistry and related Research
https://www.readbyqxmd.com/read/28556452/dimensional-alterations-following-vertical-ridge-augmentation-using-collagen-membrane-and-three-types-of-bone-grafting-materials-a-retrospective-observational-study
#12
Yun-Ho Park, Seong-Ho Choi, Kyoo-Sung Cho, Jung-Seok Lee
BACKGROUND: Various biomaterials have been introduced for vertical ridge augmentation to replace autogenous block bone grafting. PURPOSE: This retrospective study radiographically evaluated dimensional alterations of the vertically augmented alveolar ridge using collagen membrane and 3 types of materials: autogenous bone block, allogenous bone block, and particulated bone substitute. MATERIALS AND METHODS: The electronic medical records of 32 patients who received vertical ridge augmentation using 3 types of materials were searched: 9 for autogenous bone block, 12 for allogenous bone block, and 11 for particulated bone substitutes...
May 29, 2017: Clinical Implant Dentistry and related Research
https://www.readbyqxmd.com/read/28544590/location-of-implant-retained-fixed-dentures-affects-oral-health-related-quality-of-life
#13
Maoko Hara, Takashi Matsumoto, Sawako Yokoyama, Daisuke Higuchi, Kazuyoshi Baba
BACKGROUND: The effects of the locations of dental implants on treatment outcomes, as evaluated by oral health-related quality of life (OHRQoL) assessment, remain controversial. PURPOSE: To investigate the association between the locations of dental implants and changes in OHRQoL. MATERIALS AND METHODS: Sixty-eight subjects received implant treatment in the anterior or posterior region and completed the Oral Health Impact Profile (OHIP) questionnaire before and after treatment...
May 25, 2017: Clinical Implant Dentistry and related Research
https://www.readbyqxmd.com/read/28544215/anterior-single-implants-with-different-neck-designs-5-year-results-of-a-randomized-clinical-trial
#14
Laurens den Hartog, Henny J A Meijer, Arjan Vissink, Gerry M Raghoebar
BACKGROUND: The design of the implant neck might be significant for preservation of marginal bone. PURPOSE: To compare the 5-year radiographic and clinical outcome of single anterior implants provided with a smooth neck, a rough neck or a scalloped rough neck. MATERIALS AND METHODS: 93 Patients with a missing anterior tooth in the maxilla were included. At random, patients received an implant with a 1.5 mm smooth neck ("smooth group"), a rough neck with grooves ("rough group") or a scalloped rough neck with grooves ("scalloped group")...
May 23, 2017: Clinical Implant Dentistry and related Research
https://www.readbyqxmd.com/read/28517552/clinical-and-radiographic-outcomes-of-immediate-and-delayed-placement-of-dental-implants-in-molar-and-premolar-regions
#15
Joon-Kyu Kim, Hyun-Joong Yoon
PURPOSE: The purpose of this retrospective study was to determine clinical and radiographic outcomes of immediate and delayed placement of dental implants in molar and premolar regions. MATERIALS AND METHODS: Clinical and radiographic records of 116 patients who received implants in molar and premolar regions were included in this study. After implantation, patients were recalled for assessments at 1 month, 3 months, 6 months, 1 year, and every year thereafter. In addition, anatomic location, type of prosthesis, gender, stage, diameter, and length of implants were analyzed...
May 18, 2017: Clinical Implant Dentistry and related Research
https://www.readbyqxmd.com/read/28508515/extra-oral-digital-scanning-and-imaging-superimposition-for-volume-analysis-of-bone-remodeling-after-tooth-extraction-with-and-without-2-types-of-particulate-porcine-mineral-insertion-a-randomized-controlled-trial
#16
Antonio Barone, Paolo Toti, Giovan-Battista Menchini-Fabris, Giacomo Derchi, Simone Marconcini, Ugo Covani
BACKGROUND: Incorporation of bone substitute material into the extraction socket could minimize the edentulous ridge volume loss or maximize the bone formation within the healing area. PURPOSE: The aim of the study was to test the effectiveness in maintaining the volumetric contour of fresh extraction sockets grafted with or without 2 types of porcine biomaterials and covered with a resorbable barrier. MATERIALS AND METHODS: In the present multi-center single-blind randomized control trial, 55 patients underwent 1-tooth extraction, were surveyed, and randomly allocated to control- (25 sites, nat-group) or test groups (15 sites grafted with pre-hydrated collagenated cortico-cancellous porcine bone, coll-group, and 15 with cortical porcine bone, cort-group)...
May 16, 2017: Clinical Implant Dentistry and related Research
https://www.readbyqxmd.com/read/28493384/risk-factors-for-single-crowns-supported-by-short-6-mm-implants-in-the-posterior-region-a-prospective-clinical-and-radiographic-study
#17
Eduardo Aydos Villarinho, Diego Fernandes Triches, Fernando Rizzo Alonso, Luis André Mendonça Mezzomo, Eduardo Rolim Teixeira, Rosemary Sadami Arai Shinkai
BACKGROUND: The use of short implants is still not a consensus for challenging clinical situations, such as unfavorable crown-to-implant (C/I) ratio. PURPOSE: This prospective study evaluated the rates of prosthetic complications and implant failure, the mean marginal bone loss of 6-mm dental implants with single crowns in posterior regions and the potential risk factors. MATERIALS AND METHODS: Forty-six dental implants, 6-mm long and 4.1-mm wide, were placed in the posterior region in 20 patients...
May 10, 2017: Clinical Implant Dentistry and related Research
https://www.readbyqxmd.com/read/28493347/effects-of-different-loading-protocols-on-the-secondary-stability-and-peri-implant-bone-density-of-the-single-implants-in-the-posterior-maxilla
#18
Mücahide Akoğlan, Ufuk Tatli, Cem Kurtoğlu, Fariz Salimov, Mehmet Kürkçü
BACKGROUND: Immediate or early loading of dental implants becomes a clinically feasible concept. PURPOSE: The aim was to evaluate the effects of different loading protocols (immediate, early, and delayed) on secondary stability and peri-implant bone density of single implants in the posterior maxilla. MATERIALS AND METHODS: Thirty-nine implants (Dentium, South-Korea) were placed in 39 patients. After placement, implant stability values (ISQ) and baseline peri-implant bone density values derived from cone-beam computed tomography were recorded...
May 10, 2017: Clinical Implant Dentistry and related Research
https://www.readbyqxmd.com/read/28480634/does-osteoporosis-influence-the-marginal-peri-implant-bone-level-in-female-patients-a-cross-sectional-study-in-a-matched-collective
#19
Florian Wagner, Krisztian Schuder, Markus Hof, Simone Heuberer, Rudolf Seemann, Gabriella Dvorak
BACKGROUND/PURPOSE: Osteoporosis, being a homeostatic imbalance, affects the remodeling of bone. Whether this catabolic bone disease influences peri-implant marginal bone remodeling remains unknown so far. The purpose of this study was to evaluate the influence of osteoporosis on peri-implant marginal bone loss (MBL) in postmenopausal women. MATERIALS AND METHODS: In a matched collective, radiographic peri-implant bone level (at baseline and at follow-up examinations) was compared in healthy and osteoporotic women...
May 8, 2017: Clinical Implant Dentistry and related Research
https://www.readbyqxmd.com/read/28470893/gene-expression-in-peri-implant-crevicular-fluid-of-smokers-and-nonsmokers-1-the-early-phase-of-osseointegration
#20
Shariel Sayardoust, Omar Omar, Peter Thomsen
BACKGROUND: Smoking is a risk factor for dental implants. The mechanisms behind the impact of smoking on osseointegration are not fully understood. PURPOSE: To investigate the initial molecular and clinical course of osseointegration of different titanium implants in smokers and nonsmokers. MATERIALS AND METHODS: Smoker (n = 16) and nonsmoker (n = 16) patients were included. Each patient received three implant types: machined, oxidized and laser-modified surfaces...
May 3, 2017: Clinical Implant Dentistry and related Research
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