European Journal of Oral Implantology

PURPOSE: To present a rare clinical case of migration of a displaced implant fragment from the maxillary sinus to the stomach. MATERIALS AND METHODS: A 66-year-old man was referred from a local dental clinic to remove a displaced implant apical fragment in the left maxillary sinus. After 15 days from the displacement, no foreign body was seen in the maxillary sinus or in any other craniofacial cavity. Thoracic and abdominal radiographs were taken, and a 3 × 3 mm radiopaque object, which corresponded to the piece of implant fragment, was detected within the patient's stomach...

PURPOSE: To evaluate the effect of sub-mucosal mechanical instrumentation following supra-mucosal plaque removal in the treatment of peri-implant mucositis. MATERIALS AND METHODS: A total of 44 patients, 27 from a specialist clinic in Sweden, and 17 from a Japanese one, were included. The 44 patients had a total of 175 implants of which 84 (48%) had clinical signs of mucositis (bleeding on probing [BoP]) and no radiographic bone loss. At baseline, the 44 patients received professional supra-mucosal plaque removal and oral hygiene instruction and motivation...

PURPOSE: The objective of this 3-year post-loading parallel randomised controlled trial is to compare two bone substitutes and resorbable membranes in a one-stage procedure for horizontal bone augmentation: anorganic bovine bone and porcine collagen membranes (BB group) versus synthetic resorbable bone graft substitute made of pure β-tricalcium phosphate and porcine pericardium collagen membranes (CJ group). MATERIALS AND METHODS: Patients in need of implant treatment having at least one site with horizontal osseous defect at a private clinic in Rimini, Italy, were included in this study...

PURPOSE: To ascertain whether in the presence of a previously endodontically treated tooth with periapical pathology and/or symptoms and an uncertain prognosis, it is better to endodontically retreat it or to replace the tooth with a single-implant-supported crown. MATERIALS AND METHODS: Twenty patients requiring the treatment of a previously endodontically treated tooth, with periapical pathology and/or symptoms of endodontic origin and an uncertain prognosis, as judged by the recruiting investigator, were randomly allocated to endodontic retreatment (Endo group, 10 patients) or tooth extraction and replacement with an implant-supported crown (Implant group, 10 patients) according to a parallel-group design at a single centre...

PURPOSE: To compare outcomes of immediate non-occlusal loading with delayed implant loading in the bilateral replacement of mandibular first molars. MATERIALS AND METHODS: This study was designed as a split-mouth, randomised controlled trial. Twenty patients with bilaterally missing mandibular first molars randomly received immediately or conventionally loaded single implants. One molar was restored with a non-occlusal temporary crown within 24 hours after implant placement (immediate loading group, IL) while the contralateral molar was restored with a definitive crown 4 to 5 months later (delayed loading group, DL)...

PURPOSE: To compare the clinical outcome (in particular of marginal peri-implant bone level changes) between immediately loaded straight implants which had definitive abutments placed at implant placement and never removed versus implants which had no intermediate abutments. MATERIALS AND METHODS: Thirty-two edentulous patients had one of their jaws rehabilitated with a provisional screw-retained resin reinforced cross-arch fixed prosthesis supported by four immediately loaded implants: two central straight implants and two either tilted or straight distal implants...

PURPOSE: To evaluate whether 6.6-mm long implants could be a suitable alternative to longer implants placed in vertically augmented atrophic posterior mandibles. MATERIALS AND METHODS: Sixty partially edentulous patients having 7 to 8 mm of residual crestal height and at least 5.5-mm thickness measured on computed tomography scans above the mandibular canal were randomly allocated according to a parallel-group design either to receive one to three submerged 6.6-mm long implants or 9...

No abstract text is available yet for this article.

This section presents a brief review of articles on dental implants considered of special interest for the reader, in order to encourage the developing of research, the interest for data analysis and the attention to scientific publications. Your comments are welcome. Please contact Dr Michele Nieri at [email protected].

PURPOSE: The primary objective of the present controlled study was to determine the accuracy and precision of intraoral radiography in assessing interproximal bone defect morphology in patients suffering from periodontal disease as well as in patients with peri-implantitis. A secondary objective was to evaluate the possible impact of clinical experience on accuracy and precision. MATERIALS AND METHODS: The study sample comprised a total of 99 interproximal bony defects (40 patients) needing surgical treatment...

PURPOSE: The present study evaluated the hypothesis that implants inserted at bone level or supracrestally have different outcomes in single tooth replacements against the alternative hypothesis of no difference. MATERIALS AND METHODS: This study was designed as a randomised, split-mouth, controlled pilot trial. Ten patients, each missing two bicuspids or molars, were treated with 20 implants featuring 0.75 mm of machined collar. Each patient randomly received one implant inserted at bone level (BL) and one inserted 0...

PURPOSE: To compare the outcome of immediately loaded and one-stage conventionally loaded variable-thread tapered implants in the posterior maxilla. MATERIALS AND METHODS: This study was designed as a split-mouth randomised controlled trial. Twenty-six patients missing teeth bilaterally in the posterior maxilla received three to four implants in each of the posterior sextants. Bone quality was recorded based on Misch criteria (D1-D4) and insertion torque values were measured using a manual wrench...

PURPOSE: To evaluate the outcome of three (fixed-on-3 = Fo3) vs four (fixed-on-4 = Fo4) implants immediately restored with metal-resin screw-retained cross-arch prostheses in fully edentulous jaws. MATERIALS AND METHODS: Forty-eight edentulous or to be rendered edentulous patients were randomised in six centres (eight patients per centre) to the Fo3 group (24 patients: 12 maxillae and 12 mandibles) and to the Fo4 group (24 patients: 12 maxillae and 12 mandibles) according to a parallel group design...

PURPOSE: To compare the clinical outcome of dental implants restored with definitive occluding partial fixed prostheses within 1 week after implant placement with immediate non-occluding provisional restorations to be replaced by definitive prostheses after 4 months. MATERIALS AND METHODS: Forty partially edentulous patients treated with one to three dental implants, at least 8.5 mm long and 4.0 mm wide, inserted with a torque of at least 35 Ncm, were randomised in two groups of 20 patients each, to be immediately loaded with partial fixed prostheses...

PURPOSE: To compare the outcome of cross-arch prostheses supported either by 5 mm long or 11.5 mm long implants placed flapless and immediately restored with a metal-resin screw-retained cross-arch prostheses. MATERIALS AND METHODS: Thirty patients with edentulous or to-be- rendered edentulous mandibles, and 30 with edentulous maxillas, having sufficient bone to allow the placement of four and six implants respectively, of at least 11.5 mm long, were randomised according to a parallel group design into two equal groups and received either 5 mm or 11...

PURPOSE: The aim of this study was to compare survival and success rates of 6 mm-long and 10 mm-long implants in partially edentulous posterior areas. MATERIALS AND METHODS: Twenty-four patients with a partially edentulous area were included in the study. Patients were randomly allocated according to a parallel group design to receive 6 mm or 10 mm-long implants. A total of 54 implants were placed (26 × 6 mm implants). Patients were followed for 10 years after prosthetic loading...

PURPOSE: To summarise systematic reviews that assess the effects of different interventions for implant prosthetic rehabilitation in partially edentulous patients with the presence of bone atrophy. MATERIALS AND METHODS: Only systematic reviews of randomised controlled trials (RCTs) dealing with partially edentulous adult patients presenting bone defects were included. Treatments of interest were bone augmentation procedures, use of short, tilted or zygomatic implants, sinus lift and transposition of the inferior alveolar nerve...

No abstract text is available yet for this article.

AIM: In this review, we look at the factor of the surgical experience and surgical workload in a variety of surgical disciplines and its effect on the intraoperative and postoperative complications rate. MATERIALS AND METHODS: An extensive systematic electronic search was carried out on the relevant databases. Two independent reviewers were engaged in selecting appropriate articles in line with the protocol. RESULTS: It was very interesting to see that only 52 studies could be identified as per the inclusion criteria and search keywords...

AIM: A large variety of dental materials are available for the production of implant-supported fixed restorations. Materials with different properties are likely to behave differently during clinical function, which may result in different prevalence and types of complications. The aim of the present review was to summarise, analyse and discuss the prevalence and types of complications or failures related to dental materials in implant-supported restorations. MATERIALS AND METHODS: A strategy was set up using the PICO format and the search was performed using the PubMed database, including a hand search of reference lists...