搜索结果: 61-75 共查到“医学 Longitudinal”相关记录117条 . 查询时间(0.076 秒)
Longitudinal study of semen quality of unexposed workers Sperm motility characteristics
semen quality unexposed workers Sperm motility characteristics
2009/2/7
As part of a longitudinal study of human semen characteristics of unexposed workers, sperm motility measurements were made using computer-assisted sperm analysis. Motility analyses were conducted on...
Mandibular form and position related to changed mode of breathing — a five-year longitudinal study
Mandibular form Adenoidectomy
2009/1/23
A five-year follow-up study was performed on 26 children treated for nasal obstruction by adenoidectomy, who exhibited a changed mode of breathing postoperatively. They were compared with a contro...
A longitudinal evaluation of open mouth posture and maxillary arch width in children
Maxillary arch width Mouthbreathing Open mouth Children Habit
2009/1/12
Open mouth posture and maxillary arch width were assessed annually for 4 years in a group of children. While younger children exhibited high levels of open mouth posture, this behavior decreased sig...
Longitudinal predictability of AF-BF value in Angle Class I patients
Cephalometrics Wits analysis Orthodontics Skeletal Class I Sagittal discrepancy Caucasian American
2009/1/12
AF-BF is a linear cephalometric measure of the anteroposterior jaw relationship in the sagittal plane. A retrospective, longitudinal study was made to determine the mean Caucasian American AF-BF val...
Craniofacial growth differences between low and high MP-SN angle males：a longitudinal study
Craniofacial growth Cephalometrics Longitudinal Males MP-SN angles
2009/1/12
Craniofacial growth was followed longitudinally in two groups of boys with low and high MP-SN angles. The purpose was, first, to reveal group differences in dimensional change, and second, to find...
Longitudinal changes in the skeletal pattern of deciduous anterior crossbite
Deciduous anterior crossbite Longitudinal study Cephalometry
2009/1/8
Some patients who have an anterior crossbite in the deciduous dentition lose the crossbite during the transitional stage to permanent anterior teeth without orthodontic and/or orthopedic treatment. We...
Association between facial height development and mandibular growth rotation in low and high MP-SN angle faces：A longitudinal study
Facial height Mandibular rotation MP-SN angle Longitudinal Cephalometrics
2009/1/8
Two groups of children with low (n=29) and high (n=29) MP-SN angles were followed longitudinally from 6 to 15 years of age. The purpose was to thoroughly examine associations between vertical cranio...
Changes in dentofacial structures in untreated Class II division 1 and normal subjects：A longitudinal study
Normal Class II division Untreated Longitudinal Cephalometrics
2009/1/8
The purpose of this study was to compare longitudinally the changes that occur in dentofacial structures from the deciduous to the permanent dentitions in untreated Class II division 1 and normal ...
Longitudinal changes in Class I subjects with moderate mandibular skeletal protrusion
Cephalometrics Longitudinal Growth Class I Mandibular skeletal protrusion
2009/1/8
Two groups of Class I females were followed from 6 to 18 years of age. At the initial evaluation, subjects in one group had normal sagittal jaw-base relationships, while those in the other group had...
The effect of temperature on the elastic responses to longitudinal torsion of rectangular nickel titanium archwires
Archwires Materials testing Torsional stiffness Nickel titanium alloys Copper nickel titanium alloys Superelasticity
2009/1/8
To investigate responses to longitudinal torsion and the effect of temperature on the torsional stiffness of superelastic nickel titanium archwires, eight batches of rectangular wires were tested at...
A longitudinal study of nasal airway size from age 9 to age 13
Dentofacial development Nasal cross-sectional area Nasal patency Longitudinal study Pressure-flow technique
2009/1/7
In order to define nasal breathing for diagnostic purposes, reference values of normal nasal airway size in children are needed. The purpose of this study was to examine longitudinally changes in ...
Morphology and growth in convex profile facial patterns：A longitudinal study
Cephalometrics Longitudinal Convex profile Distal jaw-base relationship Females
2009/1/7
Two groups of females, one with normal anteroposterior jaw-base relationships and the other with distal jaw-base relationships, were selected at age 6 and compared longitudinally up to age 18. The p...
Longitudinal occlusal changes from primary to permanent dentition in children with normal primary occlusion
Normal occlusion Longitudinal study Primary dentition Permanent dentition
2009/1/7
This purpose of this research was to examine the stability of normal occlusion during the transition from primary to permanent dentition. The sample consisted of 128 children (83 boys and 45 girls) ...
Longitudinal study of semen quality of unexposed workers：sperm head morphometry
morphology morphometry sperm head statistics tolerance intervals
2009/1/5
As part of a longitudinal study of human semen characteristics of unexposed workers, sperm head measurements were made using image analysis (Image Technologies Corp., Deer Park, NY). Morphometry was...
Craniofacial morphology and tooth wear: A longitudinal study of orthodontic patients
Cephalometric Bruxism Dental attrition Occlusal wear Occlusion
2009/1/4
Previous research has suggested that a relationship exists between craniofacial morphology and tooth wear. The primary objective of this study was to determine whether an individual's craniofacial m...