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Dental implants

Fitria Rahmitasari, Yuichi Ishida, Kosuke Kurahashi, Takashi Matsuda, Megumi Watanabe, Tetsuo Ichikawa
Polyetheretherketone (PEEK) is a semi-crystalline linear polycyclic thermoplastic that has been proposed as a substitute for metals in biomaterials. PEEK can also be applied to dental implant materials as a superstructure, implant abutment, or implant body. This article summarizes the current research on PEEK applications in dental implants, especially for the improvement of PEEK surface and body modifications. Although various benchmark reports on the reinforcement and surface modifications of PEEK are available, few clinical trials using PEEK for dental implant bodies have been published...
December 15, 2017: Dent J (Basel)
Hodaka Sasaki, Tomoki Hirano, Syuntaro Nomoto, Yasushi Nishii, Yasutomo Yajima
Here, we report a case of dental implant treatment involving computer-assisted surgery for bilateral agenesis of the maxillary lateral incisors. The patient was a 39-year-old woman with the chief complaint of functional and esthetic disturbance due to maxillary and mandibular malocclusion. The treatment plan comprised non-extraction comprehensive orthodontic treatment and prosthodontic treatment for space due to the absence of bilateral maxillary lateral incisors. A preliminary examination revealed that the mesiodistal spaces left by the absent bilateral maxillary lateral incisors were too narrow for implant placement (right, 5...
2018: Bulletin of Tokyo Dental College
Francesco Baino, Sepideh Hamzehlou, Saeid Kargozar
Bioactive glasses caused a revolution in healthcare and paved the way for modern biomaterial-driven regenerative medicine. The first 45S5 glass composition, invented by Larry Hench fifty years ago, was able to bond to living bone and to stimulate osteogenesis through the release of biologically-active ions. 45S5-based glass products have been successfully implanted in millions of patients worldwide, mainly to repair bone and dental defects and, over the years, many other bioactive glass compositions have been proposed for innovative biomedical applications, such as soft tissue repair and drug delivery...
March 19, 2018: Journal of Functional Biomaterials
Hui Wang, Yanan Xu, Hongli Shi
PURPOSE: Metal artifacts severely degrade CT image quality in clinical diagnosis, which are difficult to removed, especially for the beam hardening artifacts. The metal artifact reduction (MAR) based on prior images are the most frequently-used methods. However, there exists a lot misclassification in most prior images caused by absence of prior information such as spectrum distribution of X-ray beam source, especially when multiple or big metal are included. This work aims is to identify a more accurate prior image to improve image quality...
March 15, 2018: Journal of X-ray Science and Technology
Maria Ángeles Pérez-Albacete Martínez, Carlos Pérez-Albacete Martínez, José Eduardo Maté Sánchez De Val, María Luisa Ramos Oltra, Manuel Fernández Domínguez, Jose Luis Calvo Guirado
The aim of this study was to evaluate osseointegration and crestal bone height in implants with a triangular cervical design in comparison with a standard rounded cervical design. The control group consisted of 24 implants with a standard cervical design, and the test group of 24 implants with a triangular cervical design. The implants were inserted in healed bone in six American Foxhounds. Crestal bone height and tissue thickness in the cervical portion were measured after 12 weeks healing. Data analysis found mean crestal bone loss of: 0...
March 21, 2018: Materials
Francesco Mangano, Alberta Greco Lucchina, Matteo Brucoli, Mario Migliario, Carmen Mortellaro, Carlo Mangano
PURPOSE: To evaluate the long-term cumulative implant survival rate (CISR%) and cumulative implant-crown success rate (CICSR%) of single-tooth Morse-taper connection implants, with particular attention to documenting the incidence of prosthetic complications. METHODS: The customized records of all patients who had been treated with single-tooth Morse-taper connection implants in 2 dental centers during the period between January 2002 and December 2012 were revisited...
March 20, 2018: Journal of Craniofacial Surgery
Chang-Hun Han, Kwang-Bum Park, Francesco Guido Mangano
OBJECTIVE: In the anterior regions, the resorption of the buccal bone after tooth extraction leads to a contraction of the overlying soft tissues, resulting in an esthetic problem, particularly with immediate implant placement. In the socket shield technique, the buccal root section of the tooth is maintained, to preserve the buccal bone for immediate implant placement. The aim of this prospective study was to investigate the survival, stability, and complication rates of implants placed using a "modified" socket shield technique...
March 20, 2018: Journal of Craniofacial Surgery
Abrar Nizar Alattar, Salwan Yousif Hanna Bede
The aim of this study was to compare the effect of conventional implant site preparation technique and a combination of conventional/piezosurgery preparation on implant stability measured at different time intervals, insertion torque, and preparation time. A randomized controlled study was designed, it included 26 patients who received 54 dental implants randomly assigned to 2 groups; in the control group, implants were installed after conventional preparation with drills whereas the study group received implants after mixed conventional/piezosurgery preparation...
March 20, 2018: Journal of Craniofacial Surgery
Wolfram Wiest, Alexander Rack, Simon Zabler, Alex Schaer, Michael Swain, Katja Nelson
State-of-the art, two-piece dental implants made from titanium alloys exhibit a complex micromechanical behavior under dynamical load. Its understanding, especially the formation of microgaps, is of crucial importance in order to predict and improve the long-term performance of such implants. Microgap formation in a loaded dental implant with a conical implant-abutment connection can be studied and quantified by synchrotron radiography with micrometer accuracy. Due to the high costs and limited access to synchrotron radiation sources, alternative approaches are needed in order to depict the microgap formation...
February 2018: Heliyon
Michael Tischler, Claudia Patch, Avinash S Bidra
STATEMENT OF PROBLEM: Limited data are available on the clinical outcomes of patients with edentulism treated with zirconia complete-arch fixed implant-supported prostheses (CAFIPs). PURPOSE: The primary purpose of this retrospective clinical study was to study the failure rate of dental implants as well as the fracture rate of zirconia CAFIPs. The secondary purpose was to study the survival outcomes of patients with edentulism treated with zirconia CAFIPs as well as the rate of technical complications...
March 17, 2018: Journal of Prosthetic Dentistry
Toshihiro Okamoto, Keika Hoshi, Kenji Fukada, Toshiyuki Kataoka, Akira Kumasaka, Nobuyuki Kaibuchi, Satoshi Fukuzawa, Tomohiro Ando
OBJECTIVE: To evaluate the background factors related to the occurrence of complications in the early stages after dental implant placement. MATERIALS AND METHODS: A total of 289 outpatients who received dental implants were retrospectively evaluated for the presence or absence of complications. Background factors, including age, sex, implant width, implant length, implant site, number of implants placed, Periotest values at the time of implant placement, presence/absence of systemic disease (particularly diabetes), and the use of anticoagulation therapy, were compared between patients with and without complications...
March 19, 2018: Implant Dentistry
Yoon-Sic Han
Sinus augmentation is a routine procedure performed in patients presenting with severe atrophy of the posterior maxillary alveolar ridge who seek dental implant surgery. Although this strategy is successful in large part, complications such as maxillary sinusitis, antral bleeding, resorption of graft material, infection, failure of implant installation, and oroantral fistula formation are documented on occasion. However, reports of postoperative maxillary cyst (POMC) arising after sinus augmentation are rare...
March 19, 2018: Implant Dentistry
Claudio Agostinelli, Agnese Agostinelli, Marco Berardini, Paolo Trisi
PURPOSE: The aim of the present study was to analyze the alveolar bone morphology of the upper first and second molars. This analysis aims to evaluate the morphology of a hypothetical postextractive site in the upper molar area to diagnose the possibility of immediate postextraction implant placement. MATERIALS AND METHODS: Cone-beam CT scans of 100 patients were examined. The measurements were made using a dedicated 3D software. Reference points were identified to allow clear and repeatable measurements...
March 19, 2018: Implant Dentistry
Soad Ali Yehia, Sally Adel Abdel Halim, Mary Yosry Aziz
OBJECTIVE: Formulation of injectable in situ forming implant (ISI) systems of lornoxicam for dental and post operative pain management to decrease dosing frequency and increase patient compliance. METHOD: Polymeric in situ implant solutions were prepared using different concentrations and inherent viscosities of Poly-DL-lactide (PDL) or DL-lactide/glycolide copolymer (PDLG) using 22X4 factorial experimental design. Non polymeric systems were prepared using different concentrations of lipids like cetyl alcohol and stearyl alcohol and also sucrose acetate isobutyrate (SAIB) using 32 factorial experimental design...
March 19, 2018: Current Drug Delivery
(no author information available yet)
This section presents a brief review of articles on dental implants considered of special interest for the reader, in order to encourage the development of research, the interest for data analysis and the attention to scientific publications. Your comments are welcome. Please contact Dr Michele Nieri at
2018: European Journal of Oral Implantology
Yifat Manor, Adi A Garfunkel
PURPOSE: To describe a rare case of odontogenic brain abscess. MATERIALS AND METHODS: A healthy, 35-year-old male had two dental implants placed in a simultaneously augmented maxillary sinus. One implant failed and the patient developed a maxillary sinusitis that failed to improve following antibiotic treatment at home. The neglected sinus infection led to formation of a brain abscess. The patient was hospitalised only when he had pan sinusitis with neurological signs...
2018: European Journal of Oral Implantology
Marco Esposito, Daniele Cardaropoli, Luca Gobbato, Fabio Scutellà, Andrea Fabianelli, Saverio Mascellani, Gianluca Delli Ficorelli, Fabio Mazzocco, Luca Sbricoli, Anna Trullenque-Eriksson
PURPOSE: To evaluate whether there are aesthetic and clinical benefits to using a newly designed abutment (Curvomax), over a conventional control abutment (GingiHue). MATERIALS AND METHODS: A total of 49 patients, who required at least two implants, had two sites randomised according to a split-mouth design to receive one abutment of each type at seven different centres. The time of loading (immediate, early or delayed) and of prosthesis (provisional crowns of fixed prosthesis) was decided by the clinicians, but they had to restore both implants in a similar way...
2018: European Journal of Oral Implantology
Giorgio Gastaldi, Pietro Felice, Valeria Pistilli, Carlo Barausse, Daniela Rita Ippolito, Marco Esposito
PURPOSE: To evaluate whether 5.0 × 5.0 mm dental implants with a novel nanostructured calcium-incorporated titanium surface could be an alternative to implants of at least 10.0 mm long placed in bone augmented with bone substitutes in posterior atrophic jaws. MATERIALS AND METHODS: Forty patients with atrophic posterior (premolar and molar areas) mandibles with 5.0 mm to 7.0 mm bone height above the mandibular canal, and 40 patients with atrophic maxillas with 4...
2018: European Journal of Oral Implantology
Caroline Bolle, Pietro Felice, Carlo Barausse, Valeria Pistilli, Anna Trullenque-Eriksson, Marco Esposito
PURPOSE: To evaluate whether 4.0 mm short dental implants could be an alternative to augmentation with xenographs in the maxilla and placement of at least 10.0 mm long implants in posterior atrophic jaws. MATERIALS AND METHODS: A group of 40 patients with atrophic posterior (premolar and molar areas) mandibles with 5.0 mm to 6.0 mm bone height above the mandibular canal and 40 patients with atrophic maxillas having 4.0 mm to 5.0 mm below the maxillary sinus, were randomised according to a parallel group design to receive between one and three 4...
2018: European Journal of Oral Implantology
Marco Esposito, Rubén Davó, Carlos Marti-Pages, Ada Ferrer-Fuertes, Carlo Barausse, Roberto Pistilli, Daniela Rita Ippolito, Pietro Felice
PURPOSE: To compare the clinical outcome of immediately loaded cross-arch maxillary prostheses supported by zygomatic implants vs conventional implants placed in augmented bone. MATERIALS AND METHODS: A total of 71 edentulous patients with severely atrophic maxillas, who did not have sufficient bone volume to place dental implants or when it was possible to place only two implants in the front area (minimal diameter 3.5 mm and length of 8 mm) and less than 4.0 mm of bone height subantrally, were randomised according to a parallel group design...
2018: European Journal of Oral Implantology
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