Prevalence and risk of peri-implant diseases based on the type of prosthetic restoration: A retrospective study after 17 to 23 years.

Statement Of Problem: Information on the epidemiology and etiopathology of peri-implant diseases in reference to prostheses is sparse.

Purpose: The purpose of this retrospective clinical study was to analyze the prevalence and risk of peri-implant diseases based on the type of prosthesis.

Material And Methods: A total of 274 implants in 106 patients were evaluated by clinical and radiological examination.

Crestal bone loss and implant failure of prefabricated versus customized abutments: a 10-year retrospective radiological study.

Objectives: There is no information today about the impact of abutment type on the crestal bone stability. This retrospective study was aimed to evaluate the crestal bone levels (CBL) and failures of implants with prefabricated and customized abutments after the long term.

Materials And Methods: The mesial and distal CBL around dental implants with prefabricated and custom abutments were recorded.

Incidence and prevalence of peri-implantitis and peri-implant mucositis 17 to 23 (18.9) years postimplant placement.

Purpose: To evaluate the prevalence of peri-implantitis (PI) and peri-implant mucositis (PM) in a long-term follow-up with comparison among different PI and PM definitions, and to report on the incidence of PI.

Materials And Methods: In a retrospective clinical study five different PI and PM definitions were applied onto a population with 274 implants 17 to 23 years postimplant placement. Recommendations by the Eighth European Workshop on Periodontology (EWOP) were used as base reference.

All-ceramic versus titanium-based implant supported restorations: Preliminary 12-months results from a randomized controlled trial.

Purpose: The aim of the present randomized controlled study was to compare prefabricated all-ceramic, anatomically shaped healing abutments followed by all-ceramic abutments and all-ceramic crowns and prefabricated standard-shaped (round-diameter) titanium healing abutments followed by final titanium abutments restored with porcelain-fused-to-metal (PFM) implant crowns in the premolar and molar regions.

Materials And Methods: Forty-two patients received single implants restored either by all-ceramic restorations (test group, healing abutment, final abutment, and crown all made of zirconia) or conventional titanium-based restorations. Immediately after prosthetic incorporation and after 12 months of loading, implant survival, technical complications, bone loss, sulcus fluid flow rate (SFFR) as well as plaque index (PI) and implant stability (Periotest) were analyzed clinically and radiologically.

Prefabricated taper crowns for the retention of implant superstructures: Three-year results of a prospective clinical trial.

Statement Of Problem: Nonrigid retainer systems for removable implant superstructures are associated with negative effects such as rocking and increased load on the denture base. Rigid retainer systems such as telescopic crowns reduce these negative effects, but their fabrication demands highly skilled dental technicians and is therefore expensive. Whether a protocol with prefabricated retainers will reduce production time is unclear.

Evaluation of Clove Oil, Icaridin, and Transfluthrin for Spatial Repellent Effects in Three Tests Systems Against the Aedes aegypti (Diptera: Culicidae).

One essential oil (clove oil), one skin repellent (icaridin), and one insecticide (transfluthrin) were tested for spatial repellent effects against non-blood-fed female Aedes aegypti (L.) mosquitoes. The compounds were tested in acetone dilution series using a Y-olfactometer, a double cage system, and a double room system.

Growth Factors in Bone Marrow Blood of the Mandible With Application of Extracorporeal Shock Wave Therapy.

Introduction: Enhancement of bone regeneration is crucial to dental implantology. Growth factors play a significant role during osteogenesis and angiogenesis. Extracorporeal shock wave therapy (ESWT) enhances bone healing; however, no studies have yet been performed in oral implantology.

Association of Keratinized Mucosa and Periimplant Soft Tissue Stability Around Implants With Platform Switching.

Purpose: To investigate the influence of the width of keratinized mucosa (KM) on clinical parameters around dental implants with platform switching.

Methods: One hundred eighteen patients with 320 implants participated in the evaluation. The width of KM, modified sulcus bleeding index (mBI), plaque index (PLI), mucosal recession (MR), and the compliance to the implant maintenance therapy (IMT) were evaluated.

Discomfort/pain due to pocket probing at teeth and endosseous implants: a cross-sectional study.

Aim: Patients seem to feel more discomfort/pain after peri-implant probing than after periodontal probing. However, there is not one single study to address this clinical observation. Thus, this study was designed to compare discomfort/pain after peri-implant and periodontal probing.

Effects of Early Moderate Loading on Implant Stability: A Retrospective Investigation of 634 Implants with Platform Switching and Morse-Tapered Connections.

Purpose: This retrospective investigation aimed to evaluate the effect of early moderate loading (EML) on implant stability.

Materials And Methods: Following 6 weeks of conventional healing, 634 dental implants (Ankylos®, Dentsply Implants, Mannheim, Germany) inserted in 247 patients were uncovered. Provisional restorations were placed in infra-occlusion in partially edentulous patients and in full occlusion in edentulous patients.

Immediate vs. delayed loading in the posterior mandible: a split-mouth study with up to 15 years of follow-up.

Purpose: The aim of this study was to evaluate the long-term clinical and radiographic outcomes of implants that were immediately loaded in a prospective, randomized, split-mouth clinical trial in the posterior mandible.

Materials And Methods: Patients with alveolar ridges that were bilaterally edentulous distal to the canines were enrolled to participate. On one randomly selected side of each patient's jaw, three implants (control group) with platform switching and a progressive thread design were placed, allowed to heal for 3 months, uncovered, and loaded occlusally using resin-splinted crowns, which then were replaced 6 weeks later by final prostheses.

Evaluation of the value of bone training (progressive bone loading) by using the Periotest: A clinical study.

Aim: The aim of this clinical study was to determine if progressive bone loading was effective in improving bone density and rigidity of implants.

Materials And Methods: 11 implants were placed with conventional loading and 14 implants were placed with progressive loading. The Periotest instrument was used to assess implant mobility.

Distal cantilever in full-arch prostheses and immediate loading: a retrospective clinical study.

Purpose: The purpose of this study was to analyze and evaluate the clinical success of distal cantilevers of fixed full-arch prostheses for the rehabilitation of edentulous arches in conjunction with immediate loading.

Materials And Methods: Twenty-seven patients (15 men and 12 women) with a mean age of 59 years received 203 implants (Ankylos, Dentsply), either in edentulous jaws or after extraction and immediate implant placement. All implants were splinted together with provisional restorations and loaded immediately after surgery.

Long-term evaluation of ANKYLOS® dental implants, part i: 20-year life table analysis of a longitudinal study of more than 12,500 implants.

Purpose: Scientific evidence is limited regarding the long-term (>10 years) outcomes of large enough numbers of implants (>500) to allow for reliable comparison of subgroups. The purpose of this study was to analyze the outcomes of dental implants placed in an active University Clinic setting and followed for up to 20 years.

Materials And Methods: Data documenting the implant placement, prosthetic reconstruction, and annual follow-up of patients treated at Frankfurt University were extracted from a Structured Query Language database and patients' written records and evaluated statistically.

Long-term results after immediate loading of platform-switched implants in smokers versus nonsmokers with full-arch restorations.

Purpose: Few studies have compared the effects of immediate loading on implant prognoses in smokers and nonsmokers. The aim of this prospective study was to evaluate the long-term success of immediately loaded platform-switched implants placed in smokers and nonsmokers with edentulous jaws.

Materials And Methods: Platform-switched implants were placed using the same treatment protocol in the healed edentulous jaws of two groups of patients: group A patients had smoked at least 20 cigarettes a day for more than 10 years, and group B consisted of nonsmokers.

Long-term results after subcrestal or crestal placement of delayed loaded implants.

Purpose: Prevention of peri-implant bone loss is essential for achieving long-term implant success, but few studies have evaluated the impact of placement depth on long-term bone loss. The aim of this retrospective study was to evaluate outcomes for platform-shifted implants placed at different depths relative to the bone crest.

Materials And Methods: The mesial and distal shoulders of 228 delayed-loaded Ankylos® (Dentsply Implants Manufacturing GmbH, Mannheim, Germany) implants placed in 85 patients were divided retrospectively into two groups based on the implant shoulder position on the day of placement surgery as follows: subcrestal group A (n = 197; 0.

Long-term evaluation of immediately loaded implants in the edentulous mandible using fixed bridges and platform shifting.

Background: The immediate loading concept has been extensively documented in the anterior part of the mandible when six primary stable implants are placed, splinted with a fixed prosthesis.

Purpose: The aim of this study was to evaluate the long-term success of immediately occlusal loaded implants with a progressive thread design and platform shifting in the edentulous mandible.

Materials And Methods: Seventy-eight implants placed in 13 patients and were connected with their abutments immediately after surgery.

Immediate functional loading in the maxilla using implants with platform switching: five-year results.

Purpose: Immediate loading in the maxilla is not a routinely recommended treatment concept; however, some clinical series have shown a high survival rate for nonfunctionally loaded implants. The purpose of this study was to demonstrate the prognosis for immediately loaded implants with a progressive thread design and platform switching placed in the maxilla with or without simultaneous augmentations using autogenous bone.

Materials And Methods: Ninety implants were placed (six in each maxillary arch) in 15 patients.

Rationale for esthetic tissue preservation of a fresh extraction socket by an implant treatment concept simulating a tooth replantation.

In cases of an immediate insertion and loading of implants after a traumatic loss of the patient's own dentition or due to an inevitable extraction of an anterior tooth, it is essential to provide the patient with an adequate provisional crown. A soft-tissue recession must be avoided, whether it is due to a compression of the peri-implant soft-tissue caused by an over-dimensioned restoration in the cervical collar of the provisional crown or to a too small dimensioned sulcus former. A simulation of the exact dimension of the lost tooth - especially on the cervical part of the new provisional restoration - is expected to preserve all relevant information and allows the design of a naturally looking emergence profile.

Immediate loading using cross-arch fixed restorations in heavy smokers: nine consecutive case reports for edentulous arches.

Purpose: Immediate loading of oral implants has been extensively documented in different clinical indications, but no studies on heavy smokers have been reported. The aim of this study was to evaluate the long-term success and the peri-implant soft and hard tissue conditions around immediately occlusal loaded implants in edentulous jaws of heavy smokers.

Materials And Methods: Implants (progressive thread design and platform switching) were connected with their abutments and splinted immediately after surgery using cross-arch fixed temporary restorations.

Regenerative therapy of deep peri-implant infrabony defects after CO2 laser implant surface decontamination.

The treatment of a peri-implant infrabony defect is difficult because of contamination of the implant surface and adjacent tissues. This case series addresses the ability of a carbon dioxide (CO2) laser to decontaminate failing implants in 15 patients. Clinical and radiologic data are presented with regard to using the laser in combination with bone grafting and a barrier.

Incidence and predictive factors for perforation of the maxillary antrum in operations to remove upper wisdom teeth: prospective multicentre study.

Background: Our aim was to evaluate the incidence of perforations of the sinuses and their related treatment after the removal of upper wisdom teeth depending on various anatomical and clinical variables.

Material And Methods: A total of 1057 upper wisdom teeth were removed under local anaesthetic in the departments of oral surgery at the Universities of Bonn, Düsseldorf, Frankfurt and Mainz, Germany. Data were collected with the help of an anonymised questionnaire dealing with information about the patients, and the position and stage of the development of teeth, as well as the occurrence and size of an oro-antral communication and its treatment.

Effects of pharmaceuticals on aquatic invertebrates. Part II: the antidepressant drug fluoxetine.

Fluoxetine, a selective serotonin reuptake inhibitor antidepressant and high-prescription-volume drug, is excreted unchanged or as a glucuronide from the human organism. Little is known about its fate in sewage treatment plants. Effects of fluoxetine on life-cycle parameters of the midge Chironomus riparius, especially development (mean emergence time), emergence, sex ratio, and fecundity, were assessed, as well as effects on reproduction of the oligochaete Lumbriculus variegatus and of the freshwater mudsnail Potamopyrgus antipodarum.

Immediate versus delayed functional loading of implants in the posterior mandible: a 2-year prospective clinical study of 12 consecutive cases.

The aim of this investigation was to evaluate the clinical success of immediately loaded implants versus implants loaded in a delayed fashion in the posterior mandible. Three implants were placed distal to the canines bilaterally in the edentulous distal mandibular ridges of 12 patients. One side was randomly selected for placement of three implants (delayed loading; control sites) with a progressive thread design for submerged healing, and after 3 months the implants were exposed and loaded with provisional splinted crowns, which were replaced 6 weeks later by the definitive restorations.

Effects of pharmaceuticals on aquatic invertebrates. Part I. The antiepileptic drug carbamazepine.

The effects of the antiepileptic drug carbamazepine (CBZ) were studied in three freshwater invertebrate species representing different taxonomic groups, life histories, and habitats in aquatic ecosystems. The oligochaete Lumbriculus variegatus was exposed by way of CBZ-spiked sediments at nominal concentrations between 0.625 and 10 mg/kg dry weight (dw) for 28 days.