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Register a new userThe Relationship Between Lips Morphology, Incisors Position and Mandibular Rotation in Adult Skeletal and Dental Class I Individuals (Cephalometric study)
العلاقة بين شكل الشفاه و توضع القواطع و دوران الفك السفلي عند البالغين في حالات الصنف الأول الهيكلي و السني (دراسة شعاعية سيفالومترية)
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Tishreen University ورقة بحثية
Publication date
2013
fields
Dentistry
and research's language is
العربية
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Shamra Editor
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هدف هذه الدراسة تقييم و تحليل قياسات الشفاه و دراسة علاقاتها مع زوايا القواطع و زوايا الدوران الفكي السفلي بالإضافة إلى تحري الاختلافات بين الجنسين بالنسبة لهذه القياسات. حيث تمت دراسة الصور الشعاعية السيفالومترية الجانية للرأس لعينة مؤلفة من 32 أنثى و 30 ذكر تراوحت أعمارهم بين 18-25 سنة و ذوي إطباق صنف أول هيكلي و سني. تم تحليل البيانات إحصائياً من خلال اختبار t للعينات المستقلة و معامل الارتباط لـ Pearson. و أظهرت النتائج وجود فروقات معنوية بين الجنسين في كلٍ من نسبة ثخانة الشفة العلوية إلى ثخانة الشفة السفلية و نسبة ثخانة الشفة العلوية إلى ارتفاعها، كما وجد عند الذكور علاقة ارتباط عكسية هامة بين زاوية البروز الشفوي و زاوية القاطعة العلوية (U1-NS) و علاقة طردية مع الزاوية بين القاطعية. كما وجدت علاقات ارتباط طردية بين الزاوية الأنفية الشفوية و الزاوية الذقنية الشفوية و زوايا الدوران الفكي السفلي، بينما كانت علاقات الارتباط عكسية بين زاوية Z و نسبة ثخانة الشفة العلوية إلى ارتفاعها و زاويا دوران الفك السفلي. أما عند الإناث فكانت علاقات الارتباط طردية بين تزوي الشفة السفلية و مجموعة من الزوايا التي لها علاقة بالدوران الفكي السفلي.
The aim of the study was to evaluate The relation between morphology of lips and incisors and mandibular rotation in adult class Ι individuals and to explore the gender dimorphism for these measurments. Material and methods True lateral cephalometric radiograph of the sample that comprises 32 females and 30 males aged 18-25 years and they possess class I skeletally and dentally. The data were analyzed using independent sample t test and Pearson correlation analysis. Results: In males interlabial angle negatively correlated with U1-NS and positively with U1-L1 Nasolabial angle and mentolabial angle positively correlated with (NS-GoMe, FH-GoMe, B, Bijork angles) Zangle and ULT/ULH negatively correlated with (NS-GoMe, FH-GoMe, B, Bijork angles) in Females lower lip inclination positively correlated with (NS-GoMe, FH-GoMe, B, Bijork angles).
References used
TADIC, N; WOODS, M.G.Incisal and soft tissue effects of maxillary premolar extraction in class II treatment. Angle Orthodontist. Vol.77, No.5, 2006, 808-816
TIMOTHY, F.F; PETER, G.D. Soft tissue profile changes in late adolescent males.Angle Orthodontist. Vol.67, No.5, 1997, 373-380
DU TOIT, A; HLONGWA, P; MZIZANA, N. Soft Tissue Profile Assessment of 15-20 Year Old Tswana Subjects. University of Pretoria, 2009
SAVERA, D. M; ACKERMAN, J. L. Othodontics about face: The reemergence of the esthetic paradigm. American Journal of Orthodontics and Dentofacial Orthopedics, Vol.117, No.5, 2000, 575-576
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Class II malocclusion is a common clinical problem among white Caucasian population and its transverse component is a critical aspect of a functional and stable occlusion. The size and shape of the arches have considerable implications in orthodontic
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