ABSTRACT
The treatment planning, clinical stages and construction of immediate dentures pose challenges to both dentist, dental technician and patient. In this two-part series, the various principles for successfully providing patients with immediate dentures will be discussed. This first paper examines the advantages and disadvantages, as well as the treatment planning involved in providing immediate dentures.
ABSTRACT
The following report describes the treatment carried out by a UK high street dental technician on an elderly patient with a large malignancy invading the oral cavity through the hard palate from the nose. The lesion remained undiagnosed during treatment for three months. The consequences of this error, and the future role of the clinical dental technician are discussed.
Subject(s)
Carcinoma, Transitional Cell/secondary , Nose Neoplasms/pathology , Palatal Neoplasms/secondary , Palate, Hard/pathology , Aged , Aged, 80 and over , Carcinoma, Transitional Cell/surgery , Dental Technicians/education , Female , Humans , Nasal Septum/pathology , Nose Neoplasms/surgery , Palatal Neoplasms/surgery , Palatal Obturators , Palate, Hard/surgeryABSTRACT
The important role of provisional restorations is often overlooked. This may be because they are left until the end of an appointment when time for construction is short or because they generally do not need to last for long. However, not only can good provisional restorations help produce better final restorations, they can also save a lot of time and expense at subsequent appointments. In fact time spent in their construction will be more than repaid in time saved doing additional procedures, adjustments and remakes later on.
Subject(s)
Dental Restoration, Temporary , Acrylic Resins , Cementation , Crowns , Dental Alloys , Dental Cements , Dental Occlusion , Esthetics, Dental , Humans , Matrix BandsABSTRACT
Cores for teeth with vital pulps is the seventh in the series of crowns and other extra-coronal restorations. A core is defined as 'that part of a preparation for an indirect restoration consisting of restorative material'. This article questions the need for routine pin placement and addresses the following issues--removal of existing restorations, the need for a core, core materials, core retention, and problem solving.
Subject(s)
Crowns , Dental Pins , Dental Prosthesis Design , Composite Resins/chemistry , Dental Amalgam/chemistry , Dental Bonding , Dental Cements/chemistry , Dental Materials/chemistry , Dental Prosthesis Retention , Dental Restoration Failure , Glass Ionomer Cements/chemistry , Humans , Matrix Bands , Problem Solving , Resin Cements/chemistry , Retreatment , Tooth Fractures/etiology , Tooth Preparation, Prosthodontic/instrumentation , Tooth Preparation, Prosthodontic/methodsABSTRACT
BACKGROUND AND AIMS OF THE STUDY: Growing interest in aortic root replacement with the use of stentless auto-, homo- and xenografts, and new developments in aortic valve conservation demand a deeper understanding of the normal aortic root anatomy. METHODS: Ten cryopreserved human aortic roots were pressurized, fixed and measured directly (leaflet free edge and attachment) and using three-dimensional computed tomography imaging software (sinus of Valsalva height and volume). RESULTS: The mean of the measurements of all four parameters yielded a pattern in which the non-coronary sinus (N) structures had the greatest dimensions followed by the right (R) and then the left (L). Non-parametric ANOVA on each of these parameters also showed significant differences among the sinuses yielding a pattern of N > R > L. This pattern determined an angle of tilt between the plane at the base (annulus) and the plane intersecting the sinotubular junction with a mean value of 11 degrees. Linear regression indicated that this angle did not depend on the size of the base (annulus). CONCLUSIONS: The data showed a geometric pattern of the aortic root, with the structures of the non-coronary sinus being the largest followed by the right and then the left. The possible hemodynamic relevance and surgical implications of these findings need to be explored.