Biomedical subjects
Publications and source records attributed to A J McCullock.
This is the first paper in a two-part series reviewing some of the relevant theoretical aspects of occlusion and describing its application in clinical practice. This article discusses terminology, clinical examination of the occlusion, articulators and interocclusal records.
In the first of these two articles, occlusal terminology, techniques for examining the occlusion, articulators and interocclusal records were discussed. Here the authors consider some of the practical applications.
Clinical, electromyographic, and kinesiographic methods were used to evaluate 35 female patients presenting with craniomandibular disorders. Twenty-six similarly aged, symptom-free women served as controls. Clinical assessments showed that the patients demonstrated a higher prevalence of bruxism than did the controls. Electromyographic results suggested that the rest activity of patients' elevators was significantly greater than that of the controls. Kinesiographic measurements showed that the patient group demonstrated greater vertical and anterior posterior movements from rest to centric occlusion than did the control group, and both the average and maximum opening velocities were smaller in patients than in controls.
A review is presented of some of the techniques available for removing restorations and foreign objects from root canals. Consideration is given to the removal of root restorations, sealers, and root canal obstructions, including fractured instruments and intact or broken posts and cores.
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The creation of a natural-looking ceramic crown which blends harmoniously with the surrounding dentition is not merely a matter of recording a shade. The subtleties of colour, translucency, discrete staining, texture, lustre and shape are all essential features. Accurate shade taking and correct tooth preparation are all necessary elements but are of little value if the information cannot be precisely communicated to the technician.
A proportion of our chairside time is spent in replacing defective restorations. However, many of the well known textbooks on restorative dentistry describe how high quality restorations should be produced, but not the techniques for removing faulty ones. This article discusses some of these techniques. It examines the removal of nonadhesive and adhesive plastic restorations, veneers, inlays, root fillings, crowns and bridges. The removal of foreign objects and posts from root canals has been described elsewhere and so will not be discussed here.