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International Journal of Oral & Maxillofacial Implants

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https://www.readbyqxmd.com/read/29028853/impact-of-sex-age-and-season-on-sinus-membrane-thickness
#1
Nouf Zimmo, Angel Insua, Khaled Sinjab, Hsun-Liang Chan, Lujain Shaikh, Hom-Lay Wang
PURPOSE: Sinus membrane thickness has been associated with the incidence of membrane perforation during the sinus elevation procedure. Understanding the sinus membrane thickness is essential for prevention of this specific surgical complication. Therefore, the aim of this retrospective study was to investigate the impact of sex, age, and season on the membrane thickness. MATERIALS AND METHODS: The charts of 144 healthy patients were included in the study. Cone beam computed tomography (CBCT) images from these patients were analyzed to determine the sinus membrane thickness in the coronal and sagittal views...
October 13, 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/29028851/peri-implant-crestal-bone-changes-around-zirconia-implants-in-periodontally-healthy-and-compromised-patients
#2
Kristian Kniha, Stefan Milz, Heinz Kniha, Nassim Ayoub, Frank Hölzle, Ali Modabber
PURPOSE: No consensus regarding the efficacy of zirconia implants in maintaining peri-implant hard and soft tissue health has yet been obtained. The aim of this retrospective follow-up study was to gain knowledge about peri-implant bone behavior and about implant survival and success after treatment with zirconia dental implants in patients with normal and compromised soft and hard tissue conditions. MATERIALS AND METHODS: This follow-up study involved 86 patients with 123 zirconia implants (Straumann PURE Ceramic Implant) that were radiographically investigated directly after implant placement (day 0), 3 months after placement, and 1 year after the definitive implant crown placement...
October 13, 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/29028850/effect-of-different-degrees-of-mesial-implant-inclination-on-the-retention-and-stability-of-two-implant-mandibular-overdentures-retained-with-stud-attachments-an-in-vitro-study
#3
Moustafa Abdou ELsyad, Omar Emhemed Abo Hatem, Ahmad Fathalla Shawky, Radwa Mohsen Kamal Emera
PURPOSE: To evaluate the effect of different degrees of mesial implant inclinations on the retention and stability of two-implant mandibular overdentures retained with stud attachments. MATERIALS AND METHODS: Four experimental mandibular acrylic models were constructed. Two laboratory implants were inserted in the canine areas of each model with the following degrees of mesial inclinations: 0, 5, 10, and 20 degrees. Experimental overdentures were connected to the implants with Locator extra-light retention (Le), Locator light retention (Ll), and Locator medium retention (Lm)...
October 13, 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/29028849/the-effect-of-resin-cement-type-and-thermomechanical-aging-on-the-retentive-strength-of-custom-zirconia-abutments-bonded-to-titanium-inserts
#4
Merve Bankoğlu Gu Ngör
PURPOSE: The purpose of this study was to investigate the effect of resin cement type on the retentive strength of custom zirconia abutments bonded to titanium inserts. MATERIALS AND METHODS: Sixty implant (4.3 mm diameter and 11.5 mm length) and custom zirconia abutment (15 mm height and 2 mm wall thickness) pairs were used to form six groups (n = 10 each). Three different resin cements were used to bond the zirconia abutments and titanium inserts: Panavia F 2...
October 13, 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/29028848/the-stability-of-augmented-bone-between-two-different-membranes-used-for-guided-bone-regeneration-simultaneous-with-dental-implant-placement-in-the-esthetic-zone
#5
Sirida Arunjaroensuk, Soontra Panmekiate, Atiphan Pimkhaokham
PURPOSE: This randomized controlled clinical trial compared the stability of augmented bone between a synthetic resorbable membrane and a collagen resorbable membrane with guided bone regeneration (GBR) simultaneous with dental implant placement in the esthetic zone in terms of facial bone thickness. MATERIALS AND METHODS: A total of 60 dental implants from patients requiring implant placement with simultaneous GBR in the esthetic zone were equally allocated to the test group or control group by block randomization...
October 13, 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/29028847/is-history-of-periodontitis-a-risk-factor-for-peri-implant-disease-a-pilot-study
#6
Mehmet Ali Altay, Sinan Tozoğlu, Nelli Yıldırımyan, Mehmet Mustafa Özarslan
PURPOSE: The aim of this pilot study was to evaluate clinical outcomes of implant treatment in periodontally compromised patients. MATERIALS AND METHODS: Partially edentulous patients who were diagnosed and treated for chronic periodontitis and later rehabilitated with implant-supported single crowns or fixed partial dentures were enrolled in this study. At the final follow-up, data on probing pocket depth and bleeding on probing were collected, and changes in peri-implant bone levels were assessed on periapical radiographs...
October 13, 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/28938035/guided-bone-regeneration-with-collagen-membranes-and-particulate-graft-materials-a-systematic-review-and-meta-analysis
#7
Bastian Wessing, Stefan Lettner, Werner Zechner
PURPOSE: The aim of this meta-analysis was to evaluate different methods for guided bone regeneration using collagen membranes and particulate grafting materials in implant dentistry. MATERIALS AND METHODS: An electronic database search and hand search were performed for all relevant articles dealing with guided bone regeneration in implant dentistry published between 1980 and 2014. Only randomized clinical trials and prospective controlled studies were included...
September 22, 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/28938032/efficacy-of-sealing-agents-on-preload-maintenance-of-screw-retained-implant-supported-prostheses
#8
Camila Berbel Seloto, Henrico Badaoui Strazzi Sahyon, Paulo Henrique Dos Santos, Juliana Aparecida Delben, Wirley Gonçalves Assunção
PURPOSE: The aim of this study was to evaluate the effect of sealing agents on preload maintenance of screw joints. MATERIALS AND METHODS: A total of four groups (n = 10 in each group) of abutment/implant systems, including external hexagon implants and antirotational UCLA abutments with a metallic collar in cobalt-chromium alloy, were assessed. In the control group (CG), no sealing agent was used at the abutment screw/implant interface. In the other groups, three different sealing agents were used at the abutment screw/implant interface: anaerobic sealing agent for medium torque (ASMT), anaerobic sealing agent for high torque (ASHT), and cyanoacrylate-based bonding agent (CYAB)...
September 22, 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/28938031/evaluation-of-a-titanium-surface-treated-with-hydroxyapatite-nanocrystals-on-osteoblastic-cell-behavior-an-in-vitro-study
#9
Elizabeth Ferreira Martinez, Guilherme Junji Ishikawa, Alexandre Barboza de Lemos, Fábio José Barbosa Bezerra, Marcelo Sperandio, Marcelo Henrique Napimoga
PURPOSE: In the context of macrostructural and microstructural modifications to the design of dental implants, surface topography changes with different treatments have the purpose of accelerating bone formation. The aim of this study was to evaluate in vitro the influence of aggregated hydroxyapatite nanocrystals to surfaces treated with double acid etching (Nano) on osteoblastic cell behavior compared with a conventional double acid-etched surface (DE). MATERIALS AND METHODS: Commercially pure Grade 4 titanium discs (6 × 2 mm) were selected, and both cell proliferation and viability were assessed at 24, 48, and 72 hours using Trypan blue vital dye and MTT, respectively...
September 22, 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/28938030/wound-healing-complications-following-guided-bone-regeneration-for-ridge-augmentation-a-systematic-review-and-meta-analysis
#10
Glendale Lim, Guo-Hao Lin, Alberto Monje, Hsun-Liang Chan, Hom-Lay Wang
PURPOSE: The rate of developing soft tissue complications that accompany guided bone regeneration (GBR) procedures varies widely, from 0% to 45%. The present review was conducted to investigate the rate for resorbable versus nonresorbable membranes and the timing of soft tissue complications. MATERIALS AND METHODS: Electronic and manual literature searches were conducted by two independent reviewers using several databases, including MEDLINE, EMBASE, Cochrane Central Register of Controlled Trials, and Cochrane Oral Health Group Trials Register, for articles published through July 2015, with no language restriction...
September 22, 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/28938029/prognosis-of-combining-remaining-teeth-and-implants-in-double-crown-retained-removable-dental-prostheses-a-systematic-review-and-meta-analysis
#11
Meifei Lian, Kai Zhao, Yunzhi Feng, Qian Yao
PURPOSE: The reliability of combining natural teeth and implants in one removable prosthesis is controversial. This systematic review was conducted to evaluate the prognosis of combined tooth/implant-supported double-crown-retained removable dental prostheses (DCR-RDPs) and to compare them with solely implant-supported prostheses with a minimum observation period of 3 years. MATERIALS AND METHODS: Electronic database (PubMed, Embase, Central, and SCI) and manual searches up to August 2016 were conducted to identify human clinical studies on tooth/implant-supported DCR-RDPs...
September 22, 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/28938028/association-between-implant-abutment-microgap-and-implant-circularity-to-bacterial-leakage-an-in-vitro-study-using-tapered-connection-implants
#12
Eduardo Cláudio Lopes de Chaves E Mello Dias, Marcelo Sperandio, Marcelo Henrique Napimoga
PURPOSE: The aim of this study was to evaluate the microgap between the abutment and implant as well as the circularity of implant platforms and associating conformational errors with bacterial microleakage in tapered connection implant systems. MATERIALS AND METHODS: Four brands of implants with a tapered abutment connection were tested. Bacterial leakage was assessed using 0.3 μL of Escherichia coli suspension inoculated into the abutment screw chamber of the implants, which were then torqued and incubated at 37°C for 14 days...
September 22, 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/28938027/effect-of-repeated-screw-joint-closing-and-opening-cycles-and-cyclic-loading-on-abutment-screw-removal-torque-and-screw-thread-morphology-scanning-electron-microscopy-evaluation
#13
Mahnaz Arshad, Hosseinali Mahgoli, Leila Payaminia
PURPOSE: To evaluate the effect of repeated screw joint closing and opening cycles and cyclic loading on abutment screw removal torque and screw thread morphology using scanning electron microscopy (SEM). MATERIALS AND METHODS: Three groups (n = 10 in each group) of implant-abutment-abutment screw assemblies were created. There were also 10 extra abutment screws as new screws in group 3. The abutment screws were tightened to 12 Ncm with an electronic torque meter; then they were removed and removal torque values were recorded...
September 22, 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/29140389/influence-of-rhbmp-2-on-guided-bone-regeneration-for-placement-and-functional-loading-of-dental-implants-a-radiographic-and-histologic-study-in-dogs
#14
Heithem Ben Amara, Jung-Won Lee, Jung-Ju Kim, Yun-Mi Kang, Eun-Jung Kang, Ki-Tae Koo
PURPOSE: Evidence on the outcomes of functional loading placed in recombinant human bone morphogenetic protein 2 (rhBMP-2)/acellular collagen sponge (ACS)-induced bone is lacking. The aim of this study was to verify whether guided bone regeneration (GBR) with rhBMP-2/ACS enhances regeneration of missing bone and osseointegration of dental implants subject to functional loading. MATERIALS AND METHODS: Two bilateral standardized large saddle-type defects (≈10 × 10 × 6 mm) were surgically created in each mandible of seven beagle dogs 2 months after tooth extraction...
November 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/29140388/titanium-activates-the-dna-damage-response-pathway-in-oral-epithelial-cells-a-pilot-study
#15
Fernando Suárez-López Del Amo, Ivan Rudek, Vivian Petersen Wagner, Manoela D Martins, Francisco O'Valle, Pablo Galindo-Moreno, William V Giannobile, Hom-Lay Wang, Rogerio M Castilho
PURPOSE: To evaluate the effect of titanium (Ti) particles on oral epithelial cell homeostasis and the potential of dental implants to release Ti debris upon insertion. MATERIALS AND METHODS: Dental implants with varying surface treatments were employed to determine the feasibility of particle release during implant placement as well as the impact of free Ti debris on oral epithelial cells. Ti particles derived from implant surfaces were isolated and cultured in direct contact with normal oral epithelial cells for 48 hours...
November 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/29140387/full-mouth-rehabilitation-with-calvarium-bone-grafts-and-dental-implants-for-a-papillon-lef%C3%A3-vre-syndrome-patient-case-report
#16
Bassam M Kinaia, Kristyn Hope, Ahmed Zuhaili, Jean Francois Tulasne
Papillon-Lefèvre syndrome (PLS) is a rare autosomal recessive disorder of keratinization associated with palmoplantar keratoderma and severe periodontitis resulting in complete edentulism in late adolescence. The pathognomonic dental features of PLS are pathologic migration, hypermobility, and exfoliation of the teeth without any signs of root resorption. It has been suggested that an effective way to treat PLS patients presenting early in the disease progression is extraction of the erupted primary dentition or hopeless permanent teeth followed by antibiotic coverage with periodontal therapy for the remaining teeth...
November 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/29140386/retrospective-study-of-survival-of-extraoral-endosseous-craniofacial-implants-in-head-and-neck-surgery-patients
#17
Brent J Woods, Arun Chandu
PURPOSE: To determine the survival rate of implants placed in different craniofacial locations and factors affecting survival. MATERIALS AND METHODS: This study retrospectively reviewed a consecutive series of patients treated at the Royal Melbourne Hospital who received craniofacial implants for an array of benign and malignant conditions. Implant survival per site and cumulative survival were determined. Surgical and implant variables were assessed using the Kaplan-Meier and Cox Proportional Hazards Models...
November 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/29140385/virtual-treatment-planning-for-implant-retained-nasal-prosthesis-a-clinical-report
#18
Muaiyed Mahmoud Buzayan, Norsiah Binti Yunu, Ha Kien Oon, Omar Tawfiq
Osseointegrated craniofacial implants have improved retention and patients' perceptions of implant-retained nasal prostheses; however, the determination of the available bone sites for implant placement post-rhinectomy is difficult. This case report describes the use of cone beam computed tomography scanning and computer-assisted virtual planning in conjunction with digital photographs for rehabilitation of a facial defect with an implant-retained silicon nasal prosthesis. Two implants were planned in the anatomical area with adequate bone volume to achieve favorable cosmetic outcomes and accessibility for hygiene maintenance...
November 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/29140384/two-bilateral-zygomatic-implants-placed-and-immediately-loaded-a-retrospective-chart-review-with-up-to-54-month-follow-up
#19
Jay Neugarten, Frank J Tuminelli, Leora Walter
PURPOSE: To report on the outcome of placement of two bilateral zygomatic implants with an immediately loaded prosthesis. MATERIALS AND METHODS: A retrospective chart review was conducted of all patients treated with zygomatic implants between August 1, 2011 and June 6, 2016. All patients had at least two zygomatic implants placed bilaterally and immediately loaded with a provisional prosthesis the same day of implant placement. The implants were Nobel Biocare TiUnite or machined surface with lengths of 30 to 52...
November 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/29140383/a-randomized-split-mouth-clinical-trial-on-effectiveness-of-amnion-chorion-membranes-in-alveolar-ridge-preservation-a-clinical-radiologic-and-morphometric-study
#20
Muyeenul Hassan, Sivaraman Prakasam, Carol Bain, Ahmed Ghoneima, Sean Shih-Yao Liu
PURPOSE: Recent case reports suggest that amnion-chorion membranes (ACM) and dense polytetrafluoroethylene membranes (dPTFE) can be left exposed during ridge preservation. The aim of this study was to compare the effectiveness of these membranes in ridge preservation, particularly when they are intentionally left exposed. MATERIALS AND METHODS: A split-mouth, single-blind, randomized trial design was used to compare treatments with the two membranes in 22 nonmolar sites on the same arch...
November 2017: International Journal of Oral & Maxillofacial Implants
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