ABSTRACT
This article reports a case of maxillary rehabilitation with an implant-supported fixed partial denture on six zirconia implants. A female patient with impacted maxillary canines attended our dental clinic seeking a metal-free maxillary restoration. After the extraction of both impacted maxillary canines and the placement of autogenous bone graft, six one-piece zirconia implants with conical abutments were placed in the anterior maxillary region. Two zirconia fixed dental prosthesis with porcelain veneering, separated at the mid-line, were placed on these zirconia implants. The ten-year follow-up monitored the adequate evolution of both implants and restorations with no signs of peri-implant disease.
ABSTRACT
This clinical report describes a mandibular full-arch rehabilitation by means of an implant-supported overdenture on four zirconia implants. A female patient with an edentulous mandibular arch attended our dental clinic seeking a metal-free mandibular restoration. After oral and radiographic evaluation, four one-piece zirconia implants with conical abutments were placed in the intermentonian region. After a 3-month osseointegration period, an acrylic overdenture with plastic matrices was manufactured, supported by a zirconia bar cemented to the conical abutments of the zirconia implants. Radiographic and clinical follow-up after 12 years observed adequate implant evolution, without any signs of peri-implant disease. Maintenance events were principally the periodic replacement of the plastic matrices and prophylaxis. Key words:Zirconia implants, overdenture, full-arch rehabilitation, dental implants, case report.
ABSTRACT
The aim of this systematic review was to evaluate the in vitro accuracy of dental implants impressions taken with intraoral scanner compared with impressions taken with conventional techniques. Two independent reviewers conducted a systematic electronic search in the PubMed, Web of Science and Scopus databases. Some of the employed key terms, combined with the help of Boolean operators, were: "dental implants", "impression accuracy", "digital impression" and "conventional impression". Publication dates ranged from the earliest article available until 31 July 2021. A total of 26 articles fulfilled the inclusion criteria: 14 studies simulated complete edentation (CE), nine partial edentation (PE) and only two simulated a single implant (SI); One study simulated both CE and SI. In cases of PE and SI, most of the studies analyzed found greater accuracy with conventional impression (CI), although digital impression (DI) was also considered adequate. For CE the findings were inconclusive as six studies found greater accuracy with DI, five found better accuracy with CI and four found no differences. According to the results of this systematic review, DI is a valid alternative to CI for implants in PE and SI, although CI appear to be more accurate. For CE the findings were inconclusive, so more studies are needed before DI can be recommended for all implant-supported restorations.
Subject(s)
Dental Implants , Models, Dental , Computer-Aided Design , Databases, Factual , Dental Impression TechniqueABSTRACT
This case report describes the conservative management of generalised tetracycline stains by means of the injectable composite resin technique. This time-efficient technique obtained optimal and satisfactory aesthetic outcomes. Both the patient and the clinician were very satisfied with the results. Composite veneers realised with injected flowable resin composites are an effective treatment, with minimally invasive possibilities, providing the case selection protocol is correct. In addition, it can be considered as a more economical treatment option.
