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Objective: The study aims to evaluate the course of implant treatment for congenitally missing lower -second premolars in patients referred to publicly funded specialist care over an 11-year period.
Material And Methods: This retrospective, register-based cohort study selected patient data on dental implant treatment in the lower second premolar region from 2009 to 2019 (n = 146). After applying exclusion criteria, the final sample included 74 patients. Data on retained deciduous teeth, orthodontic treatment prior to implant placement, and implantation procedures were gathered from patient files. Results were presented using descriptive statistics, t-test, and Chi-square analyses (p < 0.05).
Results: The most common orthodontic treatment was space optimization before dental implant placement. Most retained deciduous teeth were extracted between ages 21 and 29, with a median of 6 months before implant placement. Bone grafting was performed at 23% of implant sites. The mean implant diameter was 4.0 mm, and the mean implant length was 9.6 mm. Good primary stability was achieved in all cases.
Conclusion: Individually planned orthodontic and surgical treatments are essential in managing congenitally missing lower premolars, particularly when implant placement is indicated. Early diagnosis and collaboration between dental specialists are key elements in the treatment. A multidisciplinary approach ensures optimal space for implant, bone preservation, and optimal implant alignment.
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http://dx.doi.org/10.2340/aos.v84.44657 | DOI Listing |
ACS Chem Neurosci
September 2025
Chemical and Biomolecular Engineering Dept, University of California, Los Angeles, Los Angeles, California 90095, United States.
Simulations in three dimensions and time provide guidance on implantable, electroenzymatic glutamate sensor design; relative placement in planar sensor arrays; feasibility of sensing synaptic release events; and interpretation of sensor data. Electroenzymatic sensors based on the immobilization of oxidases on microelectrodes have proven valuable for the monitoring of neurotransmitter signaling in deep brain structures; however, the complex extracellular milieu featuring slow diffusive mass transport makes rational sensor design and data interpretation challenging. Simulations show that miniaturization of the disk-shaped device size below a radius of ∼25 μm improves sensitivity, spatial resolution, and the accuracy of glutamate concentration measurements based on calibration factors determined .
View Article and Find Full Text PDFJ Prosthodont
September 2025
Department of Community Medicine and Health Care, University of Connecticut Health Center, Farmington, Connecticut, USA.
Purpose: The purpose of this study was to evaluate the survival outcomes of dental implants placed in the pterygoid region and assess the potential influence of multiple clinical variables on their survival.
Materials And Methods: A retrospective chart review was conducted on pterygoid implants placed over a 9-year period at the University of Connecticut Department of Prosthodontics. All pterygoid implants were placed by a single board-certified prosthodontist following a standardized surgical protocol.
Int J Oral Implantol (Berl)
September 2025
Purpose: To compare the accuracy of static guided surgery using a pilot drill guide and dynamic guided surgery for dental implant placement.
Materials And Methods: Partially edentulous adult patients requiring implant placement were randomly assigned to either the static guided surgery group using a pilot drill guide or the dynamic guided surgery group. Digital implant planning was conducted using intraoral scans and CBCT with planning software to determine the optimal prosthetic position.
Int J Oral Implantol (Berl)
September 2025
Purpose: To present a novel digital workflow (the Columbus Digital Bridge Protocol) for immediately loaded full-arch rehabilitations, integrating digital technologies throughout diagnostic, surgical and prosthetic phases, with a focus on the application of intraoral photogrammetry scanning.
Materials And Methods: The workflow presented in this article, successfully implemented in 14 patients, includes standardised clinical steps: digital diagnostic planning through matching of facial scans and CBCT data, surgical placement of four implants following tooth extraction, immediate post-surgical intraoral photogrammetry scanning using a three-step procedure (i.e.
Int J Oral Implantol (Berl)
September 2025
Purpose: To evaluate changes in implant stability quotient values of hydrophilic tissue-level implants over time, and to investigate the influence of local factors on variations in these values.
Methods: Fifty tapered, self-tapping, tissue-level implants with a hydrophilic surface were placed and monitored for 12 months. Implant stability quotient values were recorded at the time of insertion (T0) and monthly thereafter for 12 months.