Palatal development of preterm and low birthweight infants compared to term infants – What do we know? Part 1: The palate of the term newborn

BACKGROUND: The evidence on prematurity as 'a priori' a risk for palatal disturbances that increase the need for orthodontic or orthognathic treatment is still weak. Further well-designed clinical studies are needed. The objective of this review is to provide a fundamental analysis of methodologies, confounding factors, and outcomes of studies on palatal development. One focus of this review is the analysis of studies on the palate of the term newborn, since knowing what is 'normal' is a precondition of being able to assess abnormalities. METHODS: A search profile based on Cochrane search strategies applied to 10 medical databases was used to identify existing studies. Articles, mainly those published before 1960, were identified from hand searches in textbooks, encyclopedias, reference lists and bibliographies. Sources in English, German, and French of more than a century were included. Data for term infants were recalculated if particular information about weight, length, or maturity was given. The extracted values, especially those from non-English paper sources, were provided unfiltered for comparison. RESULTS: The search strategy yielded 182 articles, of which 155 articles remained for final analysis. Morphology of the term newborn's palate was of great interest in the first half of the last century. Two general methodologies were used to assess palatal morphology: visual and metrical descriptions. Most of the studies on term infants suffer from lack of reliability tests. The groove system was recognized as the distinctive feature of the infant palate. The shape of the palate of the term infant may vary considerably, both visually and metrically. Gender, race, mode of delivery, and nasal deformities were identified as causes contributing to altered palatal morphology. Until today, anatomical features of the newborn's palate are subject to a non-uniform nomenclature. CONCLUSION: Today's knowledge of a newborn's 'normal' palatal morphology is based on non-standardized and limited methodologies for measuring a three-dimensional shape. This shortcoming increases bias and is the reason for contradictory research results, especially if pathologic conditions like syndromes or prematurity are involved. Adequate measurement techniques are needed and the 'normal palatal morphology' should be defined prior to new clinical studies on palatal development

A Randomized Controlled Trial to Compare 3 Methods Designed to Enhance Adherence among Orthodontic Patients

The purpose of this study was to compare 3 methods designed to enhance adherence to oral hygiene instructions in orthodontic patients: mind map, if-then plan, and leaflet. The study was a 3-arm parallel trial involving 90 orthodontic patients. The 3 groups were mind mapping, if-then planning, and patient information tools (leaflet). Group allocation was randomized in a 1:1:1 ratio. Allocation was concealed using sealed envelopes. The participant and their parents as well as the researcher undertaking the intervention and assessing the outcomes were not blinded. The statistician undertaking the analysis was blinded. Primary outcomes were plaque levels and bleeding point index. Secondary outcomes were patients’ knowledge of behaviors deemed important during orthodontic treatment and self-reported behavior. Participants were assessed at 4 time points: at the fitting of the fixed appliance (T1), at initial follow-up 6 wk later (T2, at which time they were randomly allocated to the 3 groups of intervention), 6 wk after the intervention (T3), and 18 wk postintervention (T4). Mean levels of buccal and lingual plaque, as well as the proportion of sites with bleeding sites, showed no significant differences over time (buccal plaque, Ftime = 3.74, P = 0.06; lingual plaque, Ftime = 2.78, P = 0.06; bleeding on probing, Ftime = 0.68, P = 0.51) or between interventions over time (buccal plaque, Fint× Ftime = 0.38, P = 0.68; lingual plaque, Fint× Ftime = 0.30, P = 0.88; bleeding on probing, Fint× Ftime = 0.70, P = 0.59). There were no harmful consequences detected for any of the interventions. No single method of presenting the information proved superior to any other. This trial was registered with the Guy’s &amp; St Thomas’s NHS Trust Research &amp; Development Database. Knowledge Transfer Statement: Enhancing patient adherence to advice given by their clinician is an important component of orthodontic treatment. This study explored the use of structured techniques to enhance adherence. All 3 techniques enhanced adherence over the 18-wk study period when orthodontic treatment was being provided, but no single method proved superior to any other.</p