Tooth Loss

This prospective, single-center, interventional post-market clinical follow-up (PMCF) study aims to evaluate the clinical performance and safety of temporary crown and bridge restorations fabricated using CE-marked ON DENT™ restorative materials throughout their functional intraoral clinical duration. A total of 120 adult patients requiring fixed prosthodontic treatments will be randomly assigned to four independent parallel groups (30 patients per group) based on the specific type of temporary material utilized: Tempo-CAD Monocolor PMMA, Tempo-CAD Monocolor SHT PMMA, Tempo-CAD Multicolor SHT PMMA, or Print On Cyclone Perma liquid resin. Patients will be monitored closely across 5 clinical visits up to a maximum duration of 6 months to assess prosthodontic survival, success rates, biological adaptations, and patient-reported quality of life outcomes.

This prospective, single-center, interventional post-market clinical follow-up (PMCF) study aims to evaluate the early-term (24 months post-implantation) safety and efficacy of CE-marked BIODENTOSS® and DWC ® Dental Implants and Superstructures in patients requiring dental restoration for tooth loss.

A prospective, observational, multicenter study where 62 patients needing implants in the maxilla or mandible will be enrolled. The patients will be restored with a final prosthesis no later than 4 months following implant placement surgery. The patients will come back for follow-up evaluations yearly for 2 years.

Full arch implant-supported fixed dental prosthesis is widely accepted as a treatment modality for edentulous patients, presenting high long-term implant survival rates, although further research is necessary to evaluate patient satisfaction on a longer term and the psycho-social impact of this treatment on the daily life and functioning of patients. Patient-related outcome measures evaluated through oral health-related quality of life (OHRQol) parameters, patient satisfaction and patient preference allows to evaluate the impact of the prosthodontic needs.

This prospective clinical study aims to evaluate the clinical performance of digitally assisted immediate implant placement and immediate loading in geriatric patients. The study will assess biological outcomes, including implant survival and marginal bone level changes, as well as mechanical complications and primary stability progression. Additionally, patient-reported outcomes such as pain, functional improvement, and esthetic satisfaction will be evaluated using visual analog scales. A fully digital workflow incorporating CBCT, intraoral scanning, and guided surgery will be utilized to enhance treatment accuracy and efficiency. Patients will be followed for 12 months to determine the predictability and effectiveness of this treatment approach in the elderly population.

The Falcon Study is a prospective, multicenter, multinational clinical investigation evaluating the Straumann® Dynamic Navigation System (Falcon) for dental implant placement. The Falcon system is a real-time dynamic navigation device that helps clinicians visualize the position of dental instruments during surgery. The purpose of the study is to assess whether Falcon enables safe and precise implant placement in partially edentulous patients compared to benchmarks from the literature for freehand implant placement. The study will enroll approximately 75 adult patients across four European centers (Switzerland, Italy, the Netherlands, and Belgium). Each patient will undergo preoperative planning, implant surgery with the Falcon system, and a postoperative cone beam computed tomography (CBCT) scan to measure implant placement accuracy. The main outcomes are (1) angular deviation between planned and actual implant position, and (2) safety as measured by adverse device effects. Results will provide clinical evidence to support regulatory clearance and the safe adoption of the Falcon system in routine practice.

This randomized controlled clinical trial aims to evaluate the effect of different biological drilling speeds (50, 150, and 300 rpm) during implant osteotomy preparation in the mandible on marginal bone level changes and implant stability. Thirty-nine patients requiring a single dental implant in the mandible will be randomly allocated into three groups according to drilling speed. All implants will be placed using a biological drilling protocol without irrigation. Implant stability will be measured using resonance frequency analysis at implant placement and follow-up visits. Marginal bone levels will be evaluated radiographically using standardized periapical radiographs during the follow-up period up to 12 months. The study aims to determine whether different low-speed drilling protocols influence peri-implant bone remodeling and implant stability.

This randomized clinical trial aims to evaluate the effect of different low-speed biological drilling protocols on implant stability and the osteogenic potential of autogenous bone particles collected during implant osteotomy. Patients requiring single dental implant placement in the mandible will be randomly assigned to different drilling speed protocols without irrigation. Implant stability will be measured clinically, while collected bone particles will be analyzed for osteogenic markers. The study aims to determine whether biological drilling improves implant stability and preserves the regenerative potential of autogenous bone.

Dental implants are widely used to replace missing teeth and restore oral function and aesthetics. One of the key factors affecting the long-term success of dental implants is the stability of the bone surrounding the implant, particularly the crestal bone around the implant neck. Implant insertion depth relative to the alveolar crest may influence peri-implant tissue health and marginal bone remodeling. This randomized controlled clinical trial aims to evaluate the influence of implant placement depth on peri-implant health and radiographic bone changes around short dental implants placed using guided surgical protocol. All implants will be placed using the Bicon Implant System following computer-guided implant planning and surgical guide fabrication to ensure precise implant positioning. Participants requiring implant therapy will be randomly allocated into two groups. In the test group, implants will be placed 2 mm below the crestal bone level (subcrestal placement). In the control group, implants will be placed at the crestal bone level (crestal placement). Implant placement will be performed using guided implant surgery to standardize surgical positioning and minimize variability in implant angulation and depth. Clinical parameters related to peri-implant health, including Modified Plaque Index, Implant Mucosal Index, Peri-implant Mucosal Tissue Index and Probing Depth during follow-up visits at 3, 6 and 12 months. In addition, standardized radiographic examinations will be performed to measure peri-implant Crestal bone level changes at 12 months. The primary objective of this study is to determine whether subcrestal implant placement (2 mm below the bone crest) results in improved preservation of peri-implant crestal bone compared with crestal implant placement. Secondary outcomes will include assessment of peri-implant soft tissue health and overall implant stability. The findings of this study may help clarify the optimal implant insertion depth for short implants placed using guided surgery and may contribute to improving long-term implant success and peri-implant tissue stability.

The study will examine the temporary volumetric change that happens in the gums around an implant crown when the crown is removed. The main question of the study is "how much time has to pass to see a significant change, especially when there could be a need to make a mold of the surrounding gum to make a new crown?" The area of the implant crown will be scanned with an intra-oral scanner over a period of 15 minutes.

Autogenous tooth transplantation (autotransplantation) represents a biologically valid alternative to implant therapy, particularly in young patients where implant placement is contraindicated due to ongoing skeletal growth. This approach preserves alveolar bone volume, maintains periodontal proprioception, and allows physiological adaptation over time.

The placement of short implants in post-extraction sockets is a valuable option when residual bone height is limited, minimizing morbidity and treatment time. The management of the peri-implant gap and soft tissues may influence primary stability, hard/soft tissue remodeling, and implant success.

This study aims to evaluate the clinical, radiographic, functional, and patient-reported outcomes of premolar autotransplantation used to replace anterior maxillary teeth in young patients. The study has an ambispective observational design, including a retrospective cohort (patients treated between December 2019 and December 2025) and a prospective cohort (patients enrolled until December 2028). Participants aged 7 to 15 years who received or will receive premolar autotransplantation to replace an anterior tooth will be followed clinically and radiographically for up to 5 years. Outcomes include tooth survival, periodontal and pulpal healing, root development, complications, orthodontic interactions, restorative needs, and patient satisfaction. The study seeks to identify prognostic factors and long-term success indicators for dental autotransplantation in growing patients.

Tooth loss impacts taste abilities and food intake. Present study aims at pertaining the impact of teeth loss and the replacement by means of complete denture on taste and trigeminal abilities, and on food preferences, and taste appetence.

The purpose of the study is to evaluate whether N1 dental implants are successful when a final crown is placed on them at 6 weeks from implant placement surgery.

This randomized controlled study aims to evaluate the clinical, radiographic, and histologic efficacy of using bioactive glass bone graft (UNIGRAFT by Biomed Inc., USA) compared to a conventional xenograft in maxillary sinus augmentation procedures. A total of 20 patients classified as SA4 according to the Misch classification will be enrolled and randomly allocated into two groups. Outcomes will be assessed using Cone Beam Computed Tomography (CBCT) for vertical bone gain and, where applicable, histologic analysis. The study is conducted at the Faculty of Dentistry, Suez Canal University.

The study aims to clarify the usefulness of 3D-printed replicas in association with autotransplantation of teeth in children and young adults.

This study aims to compare the clinical evaluation and patients' satisfaction of space maintainers produced by digital workflow using the 3D-printing method (3D-SMs) versus conventional band and loop space maintainers (C-SMs) produced by traditional methods.

This study aims to evaluate the clinical effectiveness of biomimetic abutments in implant restoration.

The goal of this clinical trial is to histologically, clinically, and radiographically evaluate the healing sequelae of periodontally compromised extraction sockets grafted with Bio-Oss Collagen® at 3 and 6 months following tooth extraction in molar sites. The main question it aims to answer is: Does healing time influence the histologic, clinical, and radiographic outcomes following socket grafting (alveolar ridge preservation) in periodontally compromised extraction sockets. Researchers will compare a healing time of 3 months to a healing time of 6 months (conventional healing duration) to see if a shorter duration is viable for implant placement. Participants will: Take a cone-beam computed tomography (CBCT) scan to prepare for the surgical procedure. Undergo tooth extraction and the extraction socket will be grafted with Bio-Oss Collagen® and a collagen membrane Bio-Gide® will be placed to stabilize the graft material. Return at 2 weeks for suture removal and either 3- or 6-months post-extraction for implant placement. Return at 2 weeks post-implant placement for suture removal, 3 months for prosthesis fabrication, 4 months for final prosthesis loading, and 1 year post-loading.

The primary aim of the study is to compare the outcome of one vs two visits endodontics (root canal treatments) performed in general dental practice of infected (necrotic) teeth, one and four years after treatment. Secondary aims are to compare the root filling quality and the frequency of complications for both treatment modalities. A pilot study will identify the shortcomings of the protocol, which will be revised accordingly. A multi-center study in several clinics from five counties throughout Sweden is planned. Consecutive eligible patients (see inclusion and exclusion criteria) with one tooth each will be included. The study sample size calculation was based on a judgement that a minimal worthwhile effect of less than 10% was not clinically relevant. The presumption was that successful outcomes would be of 75% and 65% for the different treatment arms, respectively. Three hundred and fifty six patients per group are thus needed to detect that difference as statistical significant with a power of 80% and an alfa-error of 5%. To compensate for around 30% drop-outs a number of 1000 patients will be recruited. Patients will be randomly enrolled in two arms: one in which the endodontic treatment (root canal treatment) is performed in one visit, and in the other arm in two visits. The allocation sequences for one vs multiple visit endodontics will be computer generated followed by a dark colored envelope concealed allocation. The patients will be contacted by telephone 5-7 days post-operatively, and a control visit at the clinic will be scheduled one month post-operatively to assess complications related to the treatment. A clinical control will be performed at the clinic one and four years after treatment. Intra-oral radiographs will be taken. The radiographs will be examined by two blinded and independent observers. A successful outcome is defined by clinical and radiographic normalcy. The statistical methods selected to analyse the primary outcome will be the Chi square test of 2x2 tables, or Fisher´s exact test when proportions are small and the expected value \<5. The calculations will be two-tailed. Results will be considered statistically significant at p\<0.05.

The goal of this prospective cohort study is to evaluate the clinical performance of a new generation of customized CAD/CAM pre-fabricated root-analog dental implants over a 36-month period. The main questions it aims to answer are: 1. Are these novel implants safe, effective, and clinically viable for 36 months? 2. Do these drilling-free implants result in better post-operative outcomes compared to traditional implant techniques? Twelve patients receiving these customized implants immediately after tooth extraction will undergo clinical and radiographic examinations at 12, 24, and 36 months after prosthesis installation. The study will assess peri-implant tissue health, post-operative comfort, bone preservation, tissue integration, and implant survival rates.

As part of the clinical study, 25 patients each were provided with removable partial dentures with clasps made of PEEK in two centres (University Hospital Heidelberg, Department of Prosthodontics and University Hospital for Dental Prosthetics Innsbruck). The patients were examined over a period of 3 years for the number and type of technical or biological complications and questioned about their oral health-related quality of life.

The goal of this cohort observational study is to compare in the survival rate of ceramic dental implants placed in patients with missing or hopeless teeth . The main question\[s\] it aims to answer are: * Are there any significant differences in survival rate between the use of one-piece ceramic implant versus the two-piece (TL) variant? * What are the complications associated to the procedure and differences between the two groups.