RESUMEN
PURPOSE@#. This randomized controlled trial aimed to evaluate the effect of implants’ two different diameters and cantilever lengths on the marginal bone loss and stability of mplants supporting maxillary prostheses. @*MATERIALS AND METHODS@#. Ninety-six implants were placed in sixteen completely edentulous maxillary ridges. Patients were randomly divided into two groups: Group A, implants were placed with a cantilever to anterior-posterior AP spread length (CL:AP) at a ratio of 1:3; Group B, implants were placed with a CL:AP at a ratio of 1:2. Patients were further divided into four sub-groups: Groups A1, A2, B1, and B2. Groups A1 and B1 received small diameter implants while Groups A2 and B2 received standard diameter implants. Bone height and stability measurements around each implant were performed at 0, 4, 8 and 24 months after definitive prostheses delivery. @*RESULTS@#. Statistical analysis of the mean implant stability and height values revealed an insignificant difference between Group A1 and Group A2 at all the different time intervals while significantly higher values in Group B1 in comparison with Group B2. Results also showed significantly higher values in Group A1 in comparison with Group B1 and an insignificant difference between Group A2 and Group B2 at all the different time intervals. @*CONCLUSION@#. It can be concluded that the use of small diameter implants placed with a CL:AP at a ratio of 1:3 provided predictable results and that the 1:2 CL:AP significantly induced more critical bone loss in the small diameter implants group, which can significantly reduce long term success and survival of implants [J Adv Prosthodont 2023;15:101-13]
RESUMEN
Many investigators recommended a routine radiographic examination for the edentulous cases before denture treatment. Panoramic radiographs obtained from inactive files of 212 patients -of both sexes- who required treatment in the college of dentistry KSU. The radiographs were me-ticulously examined. The plan of this study was to examine panoramic radiographs of edentulous patients with emphasis on the incidence of five entities ; root fragments, impacted teeth, radio-lucencies, radiopacities, and foreign bodies. Of the 212 panoramic radiographs examined, 180 were free of positive findings, and 32 [15.1%] have shown positive findings ,eighteen patients [8.5%] had one or more remaining root fragments, and this entity was statistically significant from the other entities. Three patients [1.4%] demonstrated impacted teeth. Five patients [2.4%] demonstrated radiopacities, two patients [1.9%] demonstrated radiolucencies. The radiographs of four patients [1.9%] demonstrated foreign bodies. The results of this study have proved the necessity of performing routine radiographic examination of the jaws for all edentulous patients before constructing complete dentures. It also indicates the need for a better extraction technique together with the use of radiographs before and after extraction
RESUMEN
A case was presented in which there was a screw-vent implant inserted in the maxillary posterior edentulous area. The implant was presented with both clinical and radioographic manifestations suggestive of encroachement on the maxillary sinus and the decision was directed towards removal of the implant. An endoscopic examination of the maxillary sinus revealed that the sinus lining was completely continuous and intact. A period of three months was allowed for bone healing together with the proper medication of the patient. A suprastructure was constructed with consideration to the suitable design which offered a proper load distribution and decreased effect of the occlusal forces. A clinical-radiographic follow up of the case has denoted a successful implant without notable clinical mobility or peri-implant inflammation as well as healthy bone surrounding the implant