Study on Cephalometric Changes after Orthodontic Treatment and Fixed Oral Rehabilitation in Adult Patient

The goal of this study was to look at the long-term alterations in craniofacial features, teeth, and soft tissues following 23 years of continuous fixed oral rehabilitation.

Background: Oral rehabilitation must not only meet high cosmetic and functional demands, but it must also ensure long-term stability. A complete diagnostic, including cast and clinical functional analysis, axiography, muscle and temporo-mandibular joint (TMJ) evaluation, cephalometric analysis, and meticulous treatment planning, is required if an extended fixed dental rehabilitation is planned.

Materials and Methods: Extended fixed dental restorations were obtained for 15 patients (13 women, 2 males; mean age 42.0410.05 years) using the principles of the occlusal concept of sequential guidance with front-canine dominance. The measurements were based on lateral cephalometric roentgenograms collected shortly after each participant’s dental rehabilitation, at 10, 15, and 23 years. A digital calliper was used to trace the lateral roentgenograms and measure distances.

The lower face height (PP-Me) increased by 2.67 mm, while the distance between the palatal plane and the incisal edge of the upper central incisor (PP-ls) increased by 1.49 mm, showing that the upper incisors moved downward. The distance from the palatal plane to the incisal edge of the lower central incisor grows by 1.10 mm, vertical overbite increases by 0.39 mm, and the distance between Sella and Gnathion increases by 4.99 mm in response to these alterations in the upper jaw. Over the course of 23 years after rehabilitation, the lip seal shrinks by 3.31 mm on average.

Conclusion: Significant changes in the lower face may be predicted, which are in line with the natural changes in the craniofacial complex of adults as they age.

Author (S) Details

S. Kulmer

Medical University Innsbruck, Innsbruck, Austria.

R. Hattmannstorfer

Private Practice, Innsbruck, Austria.

A. Niedermoser

Private Practice, Innsbruck, Austria.

M. Richter

Clinical Department of Orthodontics, Innsbruck Medical University, Austria.

A. Brandstatter

Division of Genetic Epidemiology, Department of Medical Genetics, Clinical and Molecular Pharmacology, Innsbruck Medical University, Austria.

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