A comparison of implant-retained mandibular overdentures and conventional dentures on quality of life in edentulous patients: a randomized, prospective, within-subject controlled clinical trial.

Objectives: To determine any difference in patient response to implant overdentures compared with conventional complete dentures alone.

Materials And Methods: In a randomized, prospective, controlled study, 122 edentulous patients (Mean age 64; 39 men, 83 women) underwent baseline assessment of denture satisfaction and quality of life using the Oral Health Impact Profile-49 (OHIP-49) and a Denture Satisfaction Questionnaire. All patients were provided with new conventional complete dentures (CCDs) that they wore for 3 months, at which point they were reassessed using the same measures.

A radiographic analysis of implant component misfit.

Purpose: Radiographs are commonly used to assess the fit of implant components, but there is no clear agreement on the amount of misfit that can be detected by this method. This study investigated the effect of gap size and the relative angle at which a radiograph was taken on the detection of component misfit. Different types of implant connections (internal or external) and radiographic modalities (film or digital) were assessed.

The effect of skeletal pattern on determining articulator settings for prosthodontic rehabilitation: an in vivo study.

Purpose: During extensive prosthodontic treatment, the use of an accurately adjusted articulator is recommended to simulate mandibular movements. This clinical study was undertaken to assess any possible effect of the underlying skeletal pattern on programming articulator settings.

Materials And Methods: Subjects (n = 73, mean age: 22.

Accuracy of bone mapping and guided flapless implant placement in human cadavers using a model-based planning procedure.

Purpose: The objective of this study was to assess the accuracy of the model-based NobelGuide method in transferring preoperative planning and estimation of bone volume to the surgical situation.

Materials And Methods: Thirteen implant replicas were placed in bounded edentulous spaces in nine human cadavers. Highly restrictive guides were fabricated using preoperative bone mapping data.

Patient satisfaction and oral health-related quality of life outcomes of implant overdentures and fixed complete dentures.

Purpose: To assess and compare patient satisfaction and oral health-related quality of life (OHQOL) in patients treated with implant-supported overdentures and complete implant fixed prostheses.

Materials And Methods: From a database of patients who had undergone implant treatment over a 6-year period, a study population of 62 patients was identified; every patient had at least four implants placed in one edentulous arch and was restored with either an overdenture or a fixed prosthesis. Patients were examined and a self-administered, structured multiple-response questionnaire, including the Oral Health Impact Profile-14 measurement tool and a patient satisfaction survey, was used to evaluate patient-centered treatment outcomes.

Demographics of implant placement and complications of a patient subgroup in a dental hospital population.

Statement Of Problem: Little has been reported about the demographics of implant placement in the Irish population and the complications that occur. This is important in terms of service planning and providing patient information.

Purpose: The purpose of this study was to construct a database of patients who had implants placed in the Dublin Dental School et Hospital from 2000 to 2006.

Altered dendritic integration in hippocampal granule cells of spatial learning-impaired aged rats.

Glutamatergic transmission at central synapses undergoes activity-dependent and developmental changes. In the hippocampal dentate gyrus, the non-N-methyl d-aspartate (NMDA) receptor component of field excitatory postsynaptic potentials (fEPSPs) increases with age in Fischer-344 rats. This effect may not depend on the animal's activity or experience but could be part of the developmental process.

Preloads generated with repeated tightening in three types of screws used in dental implant assemblies.

Purpose: Abutment screw loosening, especially in the case of cemented single tooth restorations, is a cause of implant restoration failure. This study compared three screws (titanium alloy, gold alloy, and gold-coated) with similar geometry by recording the preload induced when torques of 10, 20, and 35 Ncm were used for fixation.

Materials And Methods: Two abutment types were used-prefabricated preparable abutments and cast-on abutments.

Recent behavioral history modifies coupling between cell activity and Arc gene transcription in hippocampal CA1 neurons.

The ability of neurons to alter their transcriptional programs in response to synaptic input is of fundamental importance to the neuroplastic mechanisms underlying learning and memory. Because of technical limitations of conventional gene detection methods, the current view of activity-dependent neural transcription derives from experiments in which neurons are assumed quiescent until a signaling stimulus is given. The present study was designed to move beyond this static model by examining how earlier episodes of neural activity influence transcription of the immediate-early gene Arc.