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Survival, Prosthesis clinical trials

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NCT ID: NCT06388395 Not yet recruiting - Complete Edentulism Clinical Trials

Clinical Performance of All-on-4 PEEK and Conventional Prostheses

Start date: June 1, 2024
Phase: N/A
Study type: Interventional

The all-on-4 treatment approach for completely edentulous mandible is a proven concept. However, there are still issues regarding the use of metal substructure to support the prostheses such as allergy, metallic taste, and aesthetic. Therefore, other materials such as polyetheretherketone (PEEK) are being tested for its suitability and is showing good potential. However, available evidence is limited regarding its clinical performance. Thus, the aim of this study is to compare clinical performance of all-on-4 treatment concept utilizing PEEK versus conventional metal framework as substructure in fully edentulous mandible. Thirty suitable patients will receive either PEEK or conventional all-on-4 prostheses for fully edentulous mandible. The prostheses will be retained by four implants utilizing the all-on-4 principle. Clinical performance will be assessed during the follow up period of up 3 years concerning screw loosening, material chipping or fracture, wear or staining, prosthesis survival and success, implant survival and success.

NCT ID: NCT06242639 Completed - Clinical trials for Survival, Prosthesis

Metal-ceramic Fixed Partial Dentures Fabricated With Laser Sintering

Start date: June 1, 2021
Phase:
Study type: Observational

The aim of this retrospective clinical study was to evaluate the clinical acceptability of metal-ceramic fixed partial dentures (FPD) manufactured utilizing direct metal laser-sintering technology, taking into account the short-term, medium-term, and long-term outcomes. The Federation Dentaire International (FDI) World Dental Federation criteria were used to evaluate the esthetic, functional, and biological clinical acceptability of the patients who met the inclusion criteria

NCT ID: NCT06114030 Recruiting - Caries,Dental Clinical Trials

Clinical and Radiographical Evaluation of CAD-CAM Crowns With and Without Deep Margin Elevation

Start date: March 1, 2023
Phase: N/A
Study type: Interventional

Deep margin elevation (DME) is a non-invasive restorative technique to relocate the deep cervical margin to a supragingival position using resin composite. This retrospective multicenter practice-based study will assess the long-term clinical performance and periodontal health of teeth restored with CAD-CAM crowns with or without DME. Patients who will receive CAD-CAM lithium disilicate (LD) crowns with or without DME between 2013 and 2023 at multiple private practices will be included. When indicated, DME will be performed using resin-based restoration. Clinical assessment of the crowns and supporting periodontal structures will be performed following the modified United States Public Health Service (USPHS) criteria. Intra-oral photographs, periapical and bitewing radiographs will be taken for further assessment by three evaluators. Kaplan Meier survival analyses will be performed.

NCT ID: NCT05866289 Completed - Oxygen Deficiency Clinical Trials

Awake Prone Positioning for COVID-19 Acute Hypoxaemic Respiratory Failure

Start date: March 1, 2020
Phase:
Study type: Observational [Patient Registry]

The objective of our study is to evaluate the effectiveness of prone position in preventing intubation or death in spontaneously ventilated patients with COVID-19 with acute respiratory failure.

NCT ID: NCT05822505 Recruiting - Clinical trials for Survival, Prosthesis

Monocer AOANJRR Registry-nested Study

Start date: January 30, 2021
Phase:
Study type: Observational

This study titled "Prospective, Multicentre Study to Assess Performance of the MonoCer Acetabular Cup in Primary Total Hip Replacement" is a multi-centre prospective registry-nested cohort study, using AOANJRR's web-based data collection system integrated with Registry data collection, designed to assess the ten-year clinical outcome of the MonoCer Acetabular Cup in Primary Total Hip Replacement. The primary outcome measure is mortality and secondary measures are PROMs and complications.

NCT ID: NCT05818891 Recruiting - Clinical trials for Total Hip Arthroplasty

Multicenter Mpact DM France

Start date: April 5, 2018
Phase:
Study type: Observational

The primary objective of the study is to evaluate the 10-year performance of the MPACT DM cup in the treatment of patients requiring total hip arthroplasty. The primary endpoint is the 10-year life span of the prosthesis according to the Kaplan Meier curve.

NCT ID: NCT05812066 Not yet recruiting - Clinical trials for Survival, Prosthesis

Clinical Assessment of All Ceramic Single-retainer Using Upper Canine as Abutment With Minimum Preparation on the Lingual Surface, to Replace the Upper Lateral Incisor and Will be Compared With the All Ceramic Single-retainer Using Upper Central Incisor.

Start date: August 1, 2023
Phase: N/A
Study type: Interventional

The Intervention Will be All Ceramic Single-retainer Resin Bonded Fixed Partial Denture Using the Upper Canine as Abutment With Minimum Preparation on the Lingual Surface Within the Enamel Providing Maximum Area for the Retainer Bonding, to Replace the Upper Lateral Incisor and Will be Compared With the Control/Comparator Group Which is the All Ceramic Single-retainer RBFPD Using the Upper Central Incisor. The Participants in This Study Will be Recruited by the Researcher From the Clinic of Fixed Prosthodontics Department, Clinic of Orthodontics Department and Clinic of Diagnosis Department, Cairo University Without Any Financial or Non-financial Incentives.

NCT ID: NCT04749953 Completed - Clinical trials for Patient Satisfaction

Maxillary Sinus Floor Augmentation With Different Grafting Materials

Start date: January 1, 2020
Phase: N/A
Study type: Interventional

Implant placement in the posterior maxilla is compromised due to atrophy of the alveolar process and maxillary sinus pneumatisation. Bone augmentation is frequently necessary before or in conjunction with implant placement. The most commonly used method to augment the posterior maxillary involves maxillary sinus floor augmentation (MSFA) with autogenous bone graft or bone substitute. Autogenous bone graft harvesting is associated with risk of donor site morbidity and unpredictable resorption of graft. Thus, bone substitutes alone or in combination with autogenous bone are used increasingly to simplify the surgical procedure. Symbios biphasic biomaterial is a resorbable inorganic bone forming material derived from red algae consisting of 20% hydroxylapatite and 80% β-tricalciumphosphate with osteoconductive properties. Histologic and radiographic examinations indicate that β-tricalciumphosphate is slowly resorbed and replaced with bone. MSFA with β-tricalciumphosphate alone or in combination with autogenous bone or other bone substitutes have demonstrated high implant survival and new bone. Symbios xenograft granules is a porcine bone mineral with osteoconductive properties. Histologic and radiographic examinations indicate that xenograft is a non-resorbable graft material. MSFA with xenograft alone or in combination with autogenous bone have shown high implant survival and new bone. The objective is to test the H0-hypothesis of no difference in implant outcome after MSFA with autogenous bone graft or in combination with Symbios biphasic biomaterial or Symbios xenograft. 60 consecutively healthy patients with a missing posterior maxillary tooth/teeth will be randomly allocated to: 1) MSFA with autogenous bone graft, 2) MSFA with mixture of 50% autogenous bone graft and 50% Symbios biphasic biomaterial 3) MSFA with mixture of 50% autogenous bone graft and 50% Symbios xenograft. Implants will be inserted simultaneously with MSFA. Clinical and/or radiographical evaluation using periapical radiographs and Cone Beam Computer Tomography will be performed preoperatively, immediate postoperatively, before abutment connection, after prosthetic rehabilitation, and after one year to assess the treatment outcome and volumetric changes of the augmented area. Outcome include survival of suprastructures and implants, volumetric stability of graft, peri-implant marginal bone level, oral health related quality of life, and complications.

NCT ID: NCT04618900 Completed - Clinical trials for Patient Satisfaction

Osteotome-mediated Sinus Floor Elevation With or Without Grafting Material

Start date: November 22, 2019
Phase: N/A
Study type: Interventional

Implant placement in the posterior part of the maxilla is frequently compromised or impossible due to atrophy of the alveolar process and pneumatisation of the maxillary sinus. Therefore, alveolar ridge augmentation is frequently necessary before or in conjunction with implant placement. The most commonly used method to augment the maxillary premolar and molar region involves the maxillary sinus floor augmentation applying the lateral window technique with a grafting material. However, the lateral window technique is associated with prolonged patient treatment time and increased morbidity. Thus, osteotome-mediated sinus floor elevation (OSFE) with or without the use of a grafting material has been advocated, when the residual bone height is more than 6 mm. OSFE involves preparation of implant site through the use of concave osteotomes and elevation of the maxillary sinus floor. The survival of suprastructure and implants after OSFE with or without the use of a grafting material has never been assessed in long-term randomized controlled trials. A long-term study concluded that OSFE with no grafting material is a predictable treatment modality. High short-term implant survival rates after OSFE with or without the use of a grafting material have been reported in systematic reviews. However, the amount of new bone formation after OSFE with the use of a grafting material is significantly higher compared to the use of no grafting material, as documented in a systematic review. Harvesting of autogenous bone graft is associated with risk of donor site morbidity and bone substitutes of natural transplants involves a risk of contamination, activation of host immune system and disease transmission as well as they can be refused by patients for religious reasons or because they are in contrast with chosen lifestyle. Therefore, the objective of the present study is to test the H0-hypothesis of no difference in the long-term implant treatment outcome after OSFE with Bio-Oss Collagen compared with the use of no grafting material. A total of 40 consecutively healthy patients with a missing posterior tooth in the maxilla will be allocated at random to OSFE with Bio-Oss Collagen or no grafting material and simultaneous implant placement. Clinical and/or radiographical evaluation using periapical radiographs and Cone Beam Computer Tomography (CBCT) will be performed preoperatively, immediate postoperatively, after abutment connection, after prosthetic rehabilitation, one year, three years and five years after loading to assess the long-term implant treatment outcome and the volumetric changes of the augmented area. The primary outcome will include survival of suprastructures, survival of implants, volumetric stability of the augmented area, peri-implant marginal bone level, oral health related quality of life, and complications related to the two treatment modalities.

NCT ID: NCT04274504 Completed - Clinical trials for Survival, Prosthesis

Osteopontin in Metastatic Breast Cancer Patients

Start date: January 2015
Phase:
Study type: Observational [Patient Registry]

OPN plays an important role in various aspects of malignancy, particularly those involved in tissue invasion and metastasis, and OPN levels have been associated with aggressive¬ness in several cancer types, including breast cancer. Tumor response to treatment is a predictor of prognosis and overall survival for cancer patient population the investigators assigned osteopontin as potential contributors in breast cancer.