Mechanical reactions of facial skeleton to maxillary expansion determined by laser holography

Pavlin, Dubravko; Vukičević, Dalibor

doi:10.1016/0002-9416(84)90090-3

Cited by 45 publications

(21 citation statements)

References 23 publications

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“…A continuous force of two pounds can produce an orthopaedic effect on all the maxillary complex and its surrounding structures. Using laser holography Pavlin and Vuvicevik (1984) confirmed this statement.…”

Section: Discussionmentioning

confidence: 71%

Slow maxillary expansion: a comparison between banded and bonded appliances

Mossaz-Joëlson

Mossaz

1989

European Journal of Orthodontics

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SUMMARY Various investigations have mentioned the use of a bonded maxillary expansion appliance. It was postulated that a full coverage of the occlusal surfaces by acrylic would remove interferences during the lateral displacement of the two maxillary bones and would lessen the resistance to maxillary expansion. The first objective of this study was to compare two appliances, a bonded and a banded Minne expander using a continuous force of two pounds, which would produce a slow maxillary expansion. The second objective was to evaluate the ratio between the skeletal and dental response to slow maxillary expansion, and to compare these results to those obtained with a rapid maxillary expansion procedure.Each experimental group consisted of 5 patients, aged between 8 and 12 years wearing the two different appliances. Prior to treatment they were implanted according to the Bjork technique. The slow expansion period lasted 7 to 15 weeks followed by a retention period of 12 weeks. Post-retention observations followed 12 weeks after the end of retention.No significant difference was found between banded and bonded appliances in regard to dental and skeletal expansion and relapse. The amount of skeletal versus dental movements equalled results obtained with rapid maxillary expansion. The relapse tendency appeared lower than with rapid maxillary expansion.

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Section: Discussionmentioning

confidence: 71%

Slow maxillary expansion: a comparison between banded and bonded appliances

Mossaz-Joëlson

Mossaz

1989

European Journal of Orthodontics

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“…Melsen & Melsen [31] verified that after rapid maxillary expansion, one cannot count on a separation of this joint, since the opposing bone surfaces are extensively interlocked with one another. Rapid maxillary expansion also exerts immediate skeletal effects on the neighboring nasal cavity [11,14], where a widening of around 8-10 mm can occur in the inferior area [8], while in the superior area, a narrowing has been reported by Pavlin & Vuvicevik [33]. A significant improvement in nasal breathing is then only achieved when the obstruction lay previously in the lower part of the nasal cavity [41].…”

Section: Biomechanik Der Forcierten Gaumennahterweiterungmentioning

confidence: 99%

“…However, such studies have usually only registered the effects of large forces not reproducible ad libitum [6,9,33,36,41]. Consequently, simulation procedures largely based on finite element modeling have been established recently, and together with classical studies, they have been applied to study the effects of rapid maxillary expansion [18,20].…”

Section: Biomechanik Der Forcierten Gaumennahterweiterungmentioning

confidence: 99%

“…Melsen & Melsen [31] haben nachgewiesen, dass bei einer forcierten Gaumennahterweiterung nicht mit einer Trennung dieser Verbindung gerechnet werden kann, da die korrespondierenden Knochenoberflächen sehr stark miteinander verzahnt sind. Unmittelbare skelettale Auswirkungen hat die forcierte Gaumennahterweiterung auch auf das benachbarte Cavum nasi [11,41], wo es im inferioren Bereich zu einer Aufweitung um 8-10 mm kommen kann [8], wäh-rend im superioren Bereich sogar eine Verschmälerung von Pavlin & Vuvicevik [33] beschrieben wird. Eine signifikante Verbesserung der Nasenatmung wird daher nur dann erreicht, wenn die Obstruktion im unteren Anteil des Cavum nasi vorgelegen hat [41].…”

Section: Biomechanik Der Forcierten Gaumennahterweiterungunclassified

“…Diese Studien erfassen jedoch meist nur die Auswirkungen großer Kräfte und sind nicht beliebig wiederholbar [6,9,33,36,41]. Daher haben sich in den letzten Jahren Simulationsverfahren, die meist auf der Finite-Elemente-Methode basieren, neben den klassischen Studien zur Untersuchung der forcierten Gaumennahterweiterung etabliert [18,20].…”

Section: Biomechanik Der Forcierten Gaumennahterweiterungunclassified

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