Abstract
Statement of problem. Any deviation from the patient's rotational axis of the mandible during closure and
the arc of closure on an articulator has been reported to produce occlusal discrepancies.
These discrepancies can affect diagnostic planning procedures and the occlusal relationships
of restorations. Purpose. This study investigated the magnitude and types of occlusal errors produced by deviations
between the patient's transverse horizontal axis and the axle on the articulator.
Material and methods. A simplified monoplane model was diagrammatically analyzed for deviations from the
model's true transverse horizontal axis. Axis deviations of 5 mm were used in 8 different
directions from the true transverse horizontal axis of the model. Changes in the orientation
of the mandibular plane to the maxillary plane were illustrated diagrammatically.
These changes were quantified by geometric and trigonometric assessments. Results. All axis deviations produced mandibular plane orientation errors with angular plane
malalignment to the maxillary plane on complete closure. These axis deviations also
produced anterior-posterior shifting of the mandibular plane relative to the maxillary
plane. Conclusion. Several different types of planar shifting and angular discrepancies were demonstrated
from deviations away from the true transverse horizontal axis. (J Prosthet Dent 2001;86:67-73.)
To read this article in full you will need to make a payment
Purchase one-time access:
Academic & Personal: 24 hour online accessCorporate R&D Professionals: 24 hour online accessOne-time access price info
- For academic or personal research use, select 'Academic and Personal'
- For corporate R&D use, select 'Corporate R&D Professionals'
Subscribe:
Subscribe to Journal of Prosthetic DentistryAlready a print subscriber? Claim online access
Already an online subscriber? Sign in
Register: Create an account
Institutional Access: Sign in to ScienceDirect
References
- Evaluation of the face-bow.J Prosthet Dent. 1952; 2: 633-642
- The significance of errors in hinge axis location.J Am Dent Assoc. 1967; 74: 1268-1272
- The transverse hinge axis: real or imaginary.J Prosthet Dent. 1959; 9: 775-787
- Hinge axis. Part II. Geometric significance of the transverse axis.J Prosthet Dent. 1960; 10: 631-636
- An evaluation of the face-bow mounting.J Prosthet Dent. 1961; 11: 32-42
- The geometry of the arbitrary hinge axis as it relates to the occlusion.J Prosthet Dent. 1982; 48: 725-733
- The hinge axis transfer procedure: a three-dimensional error analysis.J Prosthet Dent. 1984; 51: 247-251
- Location of the terminal hinge axis and its effect on the second molar cusp position.J Prosthet Dent. 1984; 52: 99-105
- Evaluation of variables associated with the transverse horizontal axis.J Prosthet Dent. 1992; 68: 537-541
- Methods for minimizing the errors in mandibular model mounting on an articulator.J Oral Rehabil. 1997; 24: 929-935
- The hinge axis concept: a radiographic study of its relevance.J Prosthet Dent. 1995; 73: 60-64
- Variation of hinge interocclusal clearance and modifying mechanisms.J Prosthet Dent. 1986; 56: 606-616
- Simple hinge and semiadjustable articulators in orthognathic surgery.Am J Orthod Dentofac Orthop. 1986; 90: 37-44
- The significance of an erroneous recording of the centre of mandibular rotation in orthognathic surgery.J Craniomaxillofac Surg. 1991; 19: 254-259
- Accuracy of face-bow transfer: effect on surgical prediction and postsurgical result.J Oral Maxillofac Surg. 1992; 50: 562-567
- Computer simulation of occlusal discrepancies resulting from different mounting techniques.J Prosthet Dent. 1995; 74: 279-283
- A comparative study of two arbitrary face-bow transfer systems for orthognathic surgery planning.Int J Oral Maxillofac Surg. 1996; 25: 339-343
- Method to verify the accuracy of model surgery and prediction tracing.Int J Adult Orthod Orthognath Surg. 1996; 11: 265-270
- Improving the accuracy of a new articulator.J Prosthet Dent. 1993; 70: 239-244
- A study of the arbitrary center and the kinematic center of rotation for face-bow mountings.J Prosthet Dent. 1957; 7: 162-169
- Principles, concepts, and practices in prosthodontics-1994. Academy of Prosthodontics.J Prosthet Dent. 1995; 73: 73-94
Article info
Footnotes
☆aAssociate Professor, Department of Restorative Sciences.
☆☆bAssociate Professor, Department of Restorative Sciences.
★Reprint requests to: Dr John F. Bowley, Faculty of Dentistry, Kuwait University Health Sciences Center, PO Box 24923, Safat 13110, KUWAIT, Fax: (+965)532-6049, E-mail: [email protected]
★★J Prosthet Dent 2001;86:67-73
Identification
Copyright
© 2001 Editorial Council of The Journal of Prosthetic Dentistry. Published by Elsevier Inc. All rights reserved.
