These tools will no longer be maintained as of December 31, 2024. Archived website can be found here. PubMed4Hh GitHub repository can be found here. Contact NLM Customer Service if you have questions.


Pubmed for Handhelds

PUBMED FOR HANDHELDS

Search MEDLINE/PubMed

  • Title: Long-term stability of two-jaw surgery for treatment of mandibular deficiency and vertical maxillary excess.
    Author: Miguel JA, Turvey TA, Phillips C, Proffit WR.
    Journal: Int J Adult Orthodon Orthognath Surg; 1995; 10(4):235-45. PubMed ID: 9082012.
    Abstract:
    Changes in cephalometric landmark positions and relationships were evaluated more than 5 years postsurgically in 26 patients whose long-face condition had been treated with a combination of superior repositioning of the maxilla and mandibular advancement. All the patients had a least 2-mm surgical intrusion of the maxilla and 2-mm lengthening of the mandible with wire osteosynthesis, maxillomandibular fixation, and skeletal suspension wires. On the average, a small amount of downward and backward rotation of the mandible occurred long term. The mean change in overjet was less than 1 mm. Most of the changes occurred in a minority of the patients: 20% of the group had 2 to 4-mm downward movement of menton, and the mandibular plane angle increased more than 2 degrees in 25% of the patients. On clinical evaluation, a tendency toward opening of the bite beyond 1 year postsurgery was noted in 5 of the 26 patients (19%), and one patient had a greater than 4-mm decrease in overbite. The condylion-pogonion distance decreased 2 to 4 mm in three patients, two of whom had shown greater than 4-mm shortening of this distance during the first postsurgical year. It appears that long-term shortening of the condylar process is not a highly prevalent problem, but changes of 2 to 4 mm in condylion-pogonion associated with modest clinical relapse may occur beyond 1 year postsurgery in 5 to 10% of these two-jaw surgery patients.
    [Abstract] [Full Text] [Related] [New Search]