Showing papers in "American Journal of Orthodontics and Dentofacial Orthopedics in 1997"

TL;DR: Although the dental arch widths undergo changes from birth until midadulthood, the magnitude as well as the direction of these changes do not provide a scientific basis for expanding the arches, in the average patient, beyond its established dimensions at the time of the complete eruption of the canines and molars.

TL;DR: It is suggested that low-power laser irradiation can accelerate bone regeneration in a midpalatal suture during rapid palatal expansion and that this effect is dependent not only on the total Laser irradiation dosage but also on the timing and frequency of irradiation.

TL;DR: There was considerable variation in the pattern of change within all three groups, with about 80% of the treated children responding favorably, and although patients in both early treatment groups had approximately the same reduction in Class II severity, the mechanism of this change was different.

TL;DR: The several possible types of intracellular processes of mechanotransduction translate the informational content of a periosteal functional matrix stimulus into a skeletal unit (bone) cell signal.

TL;DR: The results of this study indicate that the clinical signs of Class II malocclusion are evident in the deciduous dentition and persist into the mixed dentition.

TL;DR: Quantification of a transmissible component suggests it would be useful to search for the biochemical factors controlling the familial differences in susceptibility to EARR, and heritability estimates were fairly high, although low for the mandibular incisor, probably because of little variation.

TL;DR: Compared skeletal and dental aspects of three different expansion methods in the mixed dentition period in sagittal, vertical, and transversal planes, treatment periods, complications, and relapse tendencies in early periods are compared.

TL;DR: It is suggested that the group of disciplines, broadly termed Complexity, would most likely amply repay deeper consideration and application in the study of ontogenesis, because they may provide alternative viewpoints capable of resolving this continuing controversy.

TL;DR: Tomographic evaluation revealed that the condyles moved posteriorly and superiorly on the noncrossbite side from before to after treatment, and whether maxillary expansion is associated with autonomous increase in mandibular arch width was determined.

TL;DR: The inclusion of the concepts and databases related to the intracellular and intercellular bone cell mechanisms and processes of mechanotransduction and the organization of bone as a biologic connected cellular network permit revision of the functional matrix hypothesis.

TL;DR: The results are a measure of systematic and random errors involved when locating landmarks on lateral head films presented as standard mean errors and 95% confidence intervals for the repeatability and reproducibility of 15 cephalometric landmarks commonly used in growth analysis.

TL;DR: It is concluded that there is little to be gained from precisely timing early treatment to specific age/maturity markers and that a favorable reduction in Class II skeletal problems can occur for patients in a broad range of skeletal severity and growth patterns.

TL;DR: This article extensively reviews the genomic hypothesis and offers a critique intended to remove some of the unintentional conceptual obscurantism that has recently come to surround it.

TL;DR: The ligatures tested appear to be suitable for use during initial aligning and leveling, however, the rapid force loss and permanent deformation of these products may preclude their use for rotational and torque corrections.

TL;DR: Results indicated strikingly similar therapeutic response between the younger and older age groups, suggesting that similar skeletal response can be obtained when maxillary protraction was started either before age 8 (5 to 8 years) or after age 8 years (8 to 12 years).

TL;DR: The data suggest that changes during adulthood occur most rapidly during the second and third decades of life, but do not stop thereafter.

TL;DR: The current findings suggest that the extraction/nonextraction decision, if based on sound diagnostic criteria, does not have a systematic detrimental effect on the facial profile, but clinicians should be aware of the trends introduced by the two treatment modalities to avoid accentuating undesirable profile characteristics.

TL;DR: The results suggest that nickel and chromium concentrations in saliva of patients with different types of fixed appliances are not significantly affected by fixed orthodontic appliances during the first month of treatment.

TL;DR: The article critically presents and discusses the various aspects of ceramic brackets with regard to the types, physical properties, bond strength, frictional resistance, base surface characteristics, debonding techniques and enamel fracture risks, enamel abrasion and wear, bracket fracture, and bracket recycling.

TL;DR: The findings of this study revealed that the downward and backward mandibular rotation continued in the control group, increasing the lower facial height significantly, whereas in the treatment groups, the skeletal open bite was treated and the mandible rotated upward and forward.

TL;DR: Two different approaches to the treatment of cleidocranial dysplasia have been proposed in the past and are discussed here and the relative advantages of a third approach are expounded in detail.

TL;DR: A dental device that advances the mandible and increases the vertical dimension to open the upper airway is more effective in reducing the number of apneic and snoring events during sleep than one which does not.

TL;DR: It is implied that RME therapy with the Haas-type expander has little long-term effect on either the vertical dimensions or the anteroposterior dimensions of the face.

TL;DR: The conclusion of the study was that the Herbst appliance is equally efficient in patients treated before and after the pubertal peak of growth, however, proclination of the lower incisors in late treated subjects is larger than in early treated subjects, which should be considered in treatment planning.

TL;DR: Eccentric positioning of T-loop springs effectively produces a consistent moment differential through the range of spring activation, and dependent only on the spring position, and independent of springactivation.

TL;DR: This study indicates that considering corrosion resistance, 2205 duplex stainless steel is an improved alternative to 316L for orthodontic bracket fabrication when used in conjunction with titanium, its alloys, or stainless steel arch wires.

TL;DR: The use of Scotchbond Multipurpose and/or maleic acid does not significantly effect bond strength, however, the use ofmaleic acid resulted in an unfavorable bond failure location.

TL;DR: The hypothesis that nasal obstruction existing before and during pubertal growth may result in permanent craniofacial deformities pertinent to skeletal open bite is supported.

TL;DR: Experimental and clinical results showed I-twins effectively conserved the traditional four tie-wing design for ease of colored elastomer placement where an increase in friction for anchorage was selectively required and to enhance patient acceptance and motivation.

TL;DR: The computer-aided measuring system is reliable, but accurate mesiodistal measurements cannot be made from photocopies of dental models and the inability to accurately measure a three-dimensional study cast that has been duplicated in two dimensions may play a role.