Occlusal plane determination.
About: This article is published in Journal of Prosthetic Dentistry.The article was published on 1970-05-01. It has received 78 citations till now. The article focuses on the topics: Denture Design & Dental occlusion.
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TL;DR: Over the past 5 to 10 years significant advances have been made in developing novel techniques which help maintain the in-vivo properties of myocytes in culture and it is anticipated that in future these advances will make cultured myocytes more attractive for use in biophysical and molecular investigations of cardiac physiology.
Abstract: Isolated adult cardiac myocytes maintained in primary culture have been used as a model of the adult myocardium for 20 years. With the recent advances and current interest in using molecular biological techniques to investigate cardiac physiology, culturing myocytes is becoming an increasingly important technique. Acutely isolated myocytes do not remain viable for the time needed for the changes in gene expression to occur, and therefore it is necessary to maintain myocytes in culture. The aims of this review are: (1) To describe a method for isolating and culturing myocytes in serum-free medium. This section is targeted at new researchers in the field, with particular emphasis on aspects of the isolation procedure which are important for optimising myocyte culture. (2) To review current knowledge of how contractile, electrophysiological and morphological properties of adult myocytes are preserved in culture. Over the past 5 to 10 years significant advances have been made in developing novel techniques which help maintain the in-vivo properties of myocytes in culture. Efficient methods for transporting exogenous genes and anti-sense oligonucleotides into adult myocytes are now available. We anticipate that in future these advances will make cultured myocytes more attractive for use in biophysical and molecular investigations of cardiac physiology.
244 citations
TL;DR: Eight implants were placed in the posterior part of the mandible using computer-generated stereolithographic templates fabricated by incorporating the precise spatial position of the implants within the bone as previously planned during the computer simulation.
Abstract: Eight implants were placed in the posterior part of the mandible using computer-generated stereolithographic templates. Preoperative implant simulation was done on a 3D computer model created by reformatted computerized tomography data. The surgeon and the prosthodontist positioned the simulated implants in the most favorable position addressing all concerns with regard to anatomy, biomechanics, and esthetics. The length and diameter of each implant along with the angulation/collar of abutments required for a screw-retained prosthesis were determined. Stereolithographic templates were then fabricated by incorporating the precise spatial position of the implants within the bone as previously planned during the computer simulation. The templates were fabricated to seat directly on the bone and were stable. The first template was used to complete osteotomies with a 2-mm twist drill followed by the second template for the 3-mm drill. Implants were placed and allowed to integrate for 4 months. After second-stage surgery, the definitive abutments were torqued into place followed by insertion of the definitive screw-retained prostheses. Dimensions of all implants and abutments were the same as planned during the computer simulation. J Prosthodont 2006;15:117-122. Copyright C � 2006 by The American College of Prosthodontists.
110 citations
TL;DR: By improving deficient facial proportion and integumental form, surgeons, orthodontists, and restorative dentists have the unique opportunity to address these esthetic needs.
Abstract: Enhancement of facial beauty is one of the primary elective goals of patients seeking dental care. The lower one third of the face has a major impact on the perception of facial esthetics. Frequently improvements in natural beauty can be expected to follow restoration of ideal relationships between the denture and the facial soft tissues. By improving deficient facial proportion and integumental form, surgeons, orthodontists, and restorative dentists have the unique opportunity to address these esthetic needs. Comprehensive evaluation that relates the facial soft tissues to underlying skeletal form provides this possibility. Fundamental relationships exist that allow correlation of deficiencies in facial form to existing dentoalveolar anatomy. Classical evaluation of mounted casts and occlusal analysis does not offer this insight.
94 citations
TL;DR: The limited amount of useful evidence-based information available for restoration of dentate appearance in edentulous individuals is demonstrated by a review of the peer-reviewed literature from 1880 to the present.
Abstract: Despite the fact that solutions to functional and comfort problems are often available, successfully restoring the appearance of an edentulous patient remains a challenge. This review of the literature demonstrates the limited amount of useful evidence-based information available for restoration of dentate appearance in edentulous individuals. The English language peer-reviewed literature from 1880 to the present was reviewed. Articles were identified through previous literature reviews, an extensive hand search, and a search of MEDLINE using the key words esthetics and denture esthetics. Three main areas of information were found: published guidelines for achieving natural appearance, patient preference studies, and studies that have collected and analyzed anatomic norms.
70 citations
TL;DR: The difficulties in performing procedural research as a means of understanding its importance, but also realizing the reasons that this type of research is not prevalent in the dental and health professional literature.
Abstract: The art and science of complete dentures for oral restoration has been espoused and debated for over a century. A tradition of clinical mentoring has passed this prosthodontic trust through time to create an educational cycle where the pupil ultimately became the tutor for yet another pupil. Today's clinical techniques and judgments are an amalgamation of these original prosthodontic philosophies. This article will bring forward some procedures for the fabrication of complete dentures for the scrutiny of their scientific bases. Scrutiny does not imply that aspects of therapy not proved in studies of rigorous scientific design are untruths. However, it is incumbent that those aspects of denture therapy regarded as "public domain" by the corpus of the profession be analyzed. It is also incumbent that possible costly or harmful aspects of denture therapy be identified. There is a paucity of "procedural research" in clinical investigations; research that involves performing an invasive or clinician-intensive procedure. This article also discusses the difficulties in performing procedural research as a means of understanding its importance, but also realizing the reasons that this type of research is not prevalent in the dental and health professional literature. The most common types of investigations used to evaluate patient acceptance and function of dentures will also be discussed. (J Prosthet Dent 1998;79:6-13.)
52 citations
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TL;DR: A strong correlation in the location of the occlusal plane of natural dentitions to given facial types, in lateral aspect is indicated.
Abstract: 1. The historical background revealed by checking literature dating from 1839 to the present on the problem of orienting the occlusal plane of artificial dentures shows slight agreement in concept. 2. Two hundred lateral cranial roentgen ray projections of senior dental students were studied to determine whether or not a correlation exists between facial type and occlusal plane location of natural dentitions. The Broadbent-Bolton Cephalostat and other well-established methods were used in the study. 3. Extensive biologic and physiologic experiments have established the functional relationship of muscle tissue to osseous and dental tissues, muscle tissue appearing to hold sway over the hard tissues. 4. Classifying maxillomandibular relations by the method proposed by Simon limits potential error in the problem. In reality, it indicates the relative direction of muscle tension dependent on the location of muscle to bone attachment. 5. The mean values of the landmarks investigated show definitive characteristics. On exposing these findings to statistical evaluation, the majority of results bear out as being statistically significant in 21 out of 28 values measured. 6. The study indicates a strong correlation in the location of the occlusal plane of natural dentitions to given facial types, in lateral aspect. 7. Additional data gleaned during the investigation reveal the location of the anterior teeth to the occlusal plane according to facial type. The position of the tongue to the hard palate with the teeth in centric occlusion is also tallied.
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