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Register a new userRelationship between incisor position and Mandibular anterior crowding in the early mixed dentition
العلاقة بين وضعية القواطع و الازدحام الأمامي في الفك السفلي في الإسنان المختلط المبكر
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عرف ازدحام القواطع السفلية بأنه تباين بين العرض الأنسي الوحشي للقواطع الأربعة الدائمة و المسافة المتوفرة على العظم السنخي . على أية حال إن ازدحام القواطع السفلية ليس مجرد تباين بين المسافة المتوفرة في العظم السنخي و حجوم الأسنان فحسب لكن هناك عدة عوامل كميلان القواطع يمكن أن تؤثر على تطور الازدحام . هدف البحث هو دراسة تأثير الازدحام الأمامي السفلي على وضعية القواطع العلوية و السفلية في المرحلة المبكرة للإسنان المختلط .
Lower incisor crowding ( L.I.C ) is identified as the discrepancy between mesiodistal tooth widths of four permanent incisors and available space in the alveolar process. However, incisor crowding is not merely a tooth-arch size discrepancy. Many factors such as incisor inclination can be affect crowding development. the aim of search. Was studying effect of mandibular anterior crowding on maxillary and mandibular incisor position in the early mixed dentition.
References used
Howe RP, McNamara JA Jr, O’Connor KA, 1983- An examination of dental crowding and its relationship to tooth size and arch dimension. American journal of orthodontics 83: 363–373
Poosti M, Jalali T, 2007- Tooth size and arch dimemsion in uncrowded versus crowded class I malocclusions. J Contemp Dent Pract, (8)3: 045 – 052
Sanin C, Savara BS, 1973- Factors that affect the alignment of the mandibular incisors: A longitudinal study. American journal of orthodontics. 64: 248–57
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Many factors such as direction of mandibular growth, early loss of
deciduous molars, the effect of maxillary and mandibular lengths
and incisor and molar inclination can be associated with crowding.
The aim of study to evaluate the effect of mandibular anterior
crowding on maxillary and mandibular base lengths and ANB
angle in the early mixed dentition .
Individuals with dental crowding are the most frequent patients in
the orthodontic clinic. Therefore, it is useful to know the
contributing factors of dental crowding for planning of orthodontic
treatment and achieving stability and retention.
Th
e aim the study. Was studying effect of teeth sizes and linear
and angular dental Measurements on mandibular anterior
crowding in the early stage of mixed dentition.
Arch length preservation, and maintenance of the leeway space in the mixed dentition can often provide an adequate space to resolve lower incisor crowding. Yet, the frequency of this occurrence is not known. To obtain this information, lingual arches
were placed in the mandibular arches of 107 consecutive mixed dentition patients with incisor crowding to preserve arch length and make the leeway space available to resolve the crowding. Arch length decreased by only 0.44mm, whereas the intercanine, interpremolar, and intermolar dimensions increased by0.72-2.27mm. There was an adequate space to resolve the crowding in 65 out of 107 patients(60%). If perfect arch length preservation occurred, there would bean adequate space to resolve the crowding in 73 out of 107 patients(68%)
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 cephalometri
c 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).
The research was conducted in the department of obstetrics and gynecology at Al-Assad university hospital in Lattakia in the period between (1/1/2014) – (30/6/2015). The study included (100) patient, who submitted to colposcopy and Papanicolaou smear
to detect the effect of early marriage (early onset of sexual activity) on colposcopic and cellular finding in cervix . The results in (early married women) group (50) patient were compared to control group from patients who (not early married women)group (50) patient. We found that there was important difference in the rate of abnormal colposcopic findings : This rate in early married women was (26%) and in the second was (12%). We also found that there was important difference in the rate of abnormal cellular findings: This rate in early married women was (18%) and in the second was (8%). This assure the effect of early onset of sexual activity (early marriage) on colposcopical and cellular finding in cervix with assuring on the importance of frequent colposcopy and Papanicolaou smear test.
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