Effects of orthodontics on the facial profile: A comparison of changes during nonextraction and four premolar extraction treatment

Young, T.M.; Smith, Richard J.

doi:10.1016/s0889-5406(05)81796-2

Cited by 67 publications

(54 citation statements)

References 22 publications

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“…11,21 However, the indication is that the face flattens slightly 7 with extraction treatment. Long term cephalometric studies of class II division 1 malocclusions have indicated that on average, in borderline extraction cases, the facial profiles of the non-extraction patients were on average 2 mm more protrusive when compared with the extraction patients after treatment.…”

Section: Discussionmentioning

confidence: 99%

“…One of the drawbacks with many of the studies undertaken to date is that the reference points used in the methods of analysis, are known to be undergoing growth changes during the period of assessment, for example the Rickett's aesthetic plane 21 and Merrifield's 'Z' angle. 23 This study included two fairly small sample groups of growing patients.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

The three-dimensional effects of orthodontic treatment on the facial soft tissues – a preliminary study.

Ismail

Moss

2002

Br Dent J

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

The three-dimensional effects of orthodontic treatment on the facial soft tissues – a preliminary study.

Ismail

Moss

2002

Br Dent J

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“…Although not statistically significant, greater changes in the position of the labrale inferiorus were observed in extraction cases than in nonextraction cases. It has been previously shown 9,10,21 that the extraction cases become significantly more retrusive than nonextraction cases based on measurements determined by the E-line and B-Line. In contrast, Janson et al 22 showed no significant differences between nonextraction and maxillary first premolar extraction cases using the Steiner's S1-line and the Rickett's E-line; they did find significant differences based on the Burstone's B-line.…”

Section: Discussionmentioning

confidence: 98%

Can commonly used profile planes be used to evaluate changes in lower lip position?

Buschang

Fretty

Campbell

2011

The Angle Orthodontist

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Objectives: To determine the validity of five profile planes commonly used to describe the horizontal changes of the lower lip during orthodontic treatment. Materials and Methods: Pretreatment and posttreatment cephalograms of 79 patients (12.4 6 2.8 years of age) were evaluated. Lower lip (labrale inferiorus) changes over time were measured relative to the Rickett's E-line, Steiner's S1-line, Burstone's B-line, Sushner's S2-line, and Holdaway's H-line. As an independent measure of actual horizontal lip changes, the labrale inferiorus was measured relative to a stable reference plane registered on the sella and oriented on the SN-7u. Results: The lower lip actually moved anteriorly 2.35 6 3.35 mm during orthodontic treatment; the five profile planes indicated that the lower lip moved to a more retrusive, posterior position. The five profile planes also showed no statistically significant sex differences in terms of the treatment changes that occurred, while the actual lip changes showed that males exhibited significantly greater changes than females. Actual treatment changes showed that the lower lip moved to a more protrusive position with nonextraction than with extraction treatments, changes that were not evident based on the five profile lines. While lip changes based on the five profile planes demonstrated moderately high to high intercorrelations ranging from 0.81 to 0.97, they showed only weak correlations (r , .35) with the actual horizontal changes of the labrale inferiorus. Conclusions: While all five planes measured similar aspects of positional change, none of them closely reflected the actual lower lip changes that occurred. These planes should not be used to measure changes in lip position that occur during treatment. (Angle Orthod. 2011;81:557-563.)

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“…Baz› çal›flmalarda çekimli ve çekimsiz te--davilerin çok farkl› profil sonuçlar› do¤urma--d›¤› belirtilmifltir (12)(13)(14)(15). Bu nedenle tedavi seçiminde sadece profil de¤il, di¤er baz› is--keletsel ve dental parametreler de göz önün--de bulundurulmal›d›r.…”

Section: S Su Um MM Ma Ar Ry Yunclassified

RME Uygulanan Hastalarda Çekimli Ve Çekimsiz Tedavinin Etkileri

Hamamci¹,

Akkurt²,

Doğru³

et al. 2010

Turkish Journal of Orthodontics

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Effects of orthodontics on the facial profile: A comparison of changes during nonextraction and four premolar extraction treatment

Cited by 67 publications

References 22 publications

The three-dimensional effects of orthodontic treatment on the facial soft tissues – a preliminary study.

The three-dimensional effects of orthodontic treatment on the facial soft tissues – a preliminary study.

Can commonly used profile planes be used to evaluate changes in lower lip position?

RME Uygulanan Hastalarda Çekimli Ve Çekimsiz Tedavinin Etkileri

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