1,721,059 research outputs found
Reliability of Growth Indicators and Efficiency of Functional Treatment for Skeletal Class II Malocclusion: Current Evidence and Controversies
Full text linkCurrent evidence on the reliability of growth indicators in the identification of the pubertal growth spurt and efficiency of functional treatment for skeletal Class II malocclusion, the timing of which relies on such indicators, is highly controversial. Regarding growth indicators, the hand and wrist (including the sole middle phalanx of the third finger) maturation method and the standing height recording appear to be most reliable. Other methods are subjected to controversies or were showed to be unreliable. Main sources of controversies include use of single stages instead of ossification events and diagnostic reliability conjecturally based on correlation analyses. Regarding evidence on the efficiency of functional treatment, when treated during the pubertal growth spurt, more favorable response is seen in skeletal Class II patients even though large individual responsiveness remains. Main sources of controversies include design of clinical trials, definition of Class II malocclusion, and lack of inclusion of skeletal maturity among the prognostic factors. While no growth indicator may be considered to have a full diagnostic reliability in the identification of the pubertal growth spurt, their use may still be recommended for increasing efficiency of functional treatment for skeletal Class II malocclusion
Dental maturation is not a reliable indicator of the pubertal growth spurt
No full textThe authors concluded that “As a clinical implication from our study, the association between the tooth mineralization stages and the skeletal maturation indicators allows clinicians to easily identify the pubertal growth period from the panoramic or intraoral radiographs.” The authors correctly reported that “A high correlation coefficient does not provide information about whether the dental maturation stage is satisfactory for diagnostic identification of the skeletal maturation stage.” However, in spite of that, this is a further correlation study between dental and skeletal maturation missing any diagnostic reliability analysis. Although it is a sophisticated procedure, the multiple ordinal regression analysis used by the authors remains an “association” analysis, which is unable to determine the capability of dental maturation in the identification of the different growth phases in individual subjects. The issue of the proper investigation on the diagnostic reliability of dental maturation in assessing the growth phase was raised years ago by our research team, which suggested the use of proper diagnostic performance analysis instead of correlation analyses.2 Among the diagnostic parameters we introduced was the positive likelihood ratio (LHR) that provides an estimate of how much a given dental maturation stage changes the odds of having a given growth phase.3 A threshold of ≥10 for a positive LHR is considered for assessment of satisfactory diagnostic reliability.
Dr. Giuseppe Perinetti comments on Dr. Nozomi Maeda, et al.'s article (pps. 194-203) in CRANIO's July, 2011 issue.
No full textThe Impact of Orthodontic Treatment on Masticatory Performance: A Literature Review
Full text linkThe aim of this narrative review was to evaluate the possible association between orthodontic therapy and improved masticatory function. A search strategy was conducted using the PubMed database for up to January 2020 using the keywords “mastication” and “orthodontics”. Only human studies investigating mastication in orthodontics settings were selected. The search strategy resulted in 1,011 articles, out of which 57 were included in the final analysis. Investigations have generally agreed that masticatory and chewing functions improved post-orthodontic and orthognathic treatments. Studies also showed improvement in the quality of life of patients' post-orthodontic treatment. The articles examined reinforced that besides esthetic reasons, orthodontic therapy does improve the masticatory and chewing functions of individuals, ultimately enhancing their health-related quality of life
Diagnostic reliability of the third finger middle phalanx maturation (MPM) method in the identification of the mandibular growth peak
No full textBACKGROUND/OBJECTIVES: The use of the sole third finger middle phalanx for a maturational method has been proposed but not fully investigated. Herein, the diagnostic reliability of an improved five-stage third finger middle phalanx maturation (MPM) method in the identification of mandibular growth peak has been investigated. SUBJECTS/METHODS: From the files of the Burlington Growth Study, 35 subjects (20 males, 15 females) with at least 7 annual lateral cephalograms taken from 9 to 16 years were included. Mandibular growth was defined as annual increments in condylion-gnathion (Co-Gn) distance. Subsequently, individual annual increments in Co-Gn were arranged according to annual age intervals, with the first and last intervals defined as 9-10 years and 14/15-16 years, respectively. A full diagnostic reliability analysis (including positive likelihood ratio) was performed to establish the diagnostic reliability of the MPM stage 2 (MPS2) in the identification of the imminent mandibular growth peak.. RESULTS: The MPS2 had a satisfactory accuracy in the identification of imminent mandibular growth peak with an overall positive likelihood ratio of 10.3. However, reliability showed noteworthy variability being greater and lower for younger and older age intervals, respectively. LIMITATIONS: Secular trend, limited sample size, and annual recording in conjunction with the use of a discrete staging system. At the 15 years recording, 28 of 35 cases were missing. CONCLUSIONS/IMPLICATIONS: The MPS2 and MPS3 may be considered associated with the onset and maximum mandibular growth peak, respectively, in most of the subjects, indicating their use in planning treatment timing
Estrazioni dentarie nei pazienti in trattamento anticoagulante: revisione della letteratura
No full textPosturography as a diagnostic aid in dentistry: A systematic review
No full textThe aim of this systematic review of the literature was to assess the scientific evidence for detectable correlations between the stomatognathic system and whole-body posture and to provide information on the relevance of posturography as a diagnostic aid in dentistry. A literature survey was performed using the Medline database, covering the period from January 1966 to May 2009, and using the medical subject headings. After selection, 21 articles qualified for the final analysis. Only one study was judged to be of medium/high quality, with all of the rest classified as of low quality design. Only two studies included follow-up of 28 days and 1 year. Overall, 14 of the studies reported detectable correlations between the stomatognathic system and body posture in at least one of the parameters used, although in four of these studies the authors suggested caution in the interpretation of their data. After a reappraisal of the data provided in 13 of the studies, a weak correlation that r
Gingival Crevicular Fluid as a Source of Biomarkers of Patient Responsiveness to Orthodontic Treatment.
No full textGingival crevicular fluid alkaline phosphatase activity in relation to pubertal growth spurt and dental maturation: A multiple regression study
Full text linkIntroduction: The identification of the onset of the pubertal growth spurt has major clinical implications when dealing with orthodontic treatment in growing subjects.
Aim: Through multivariate methods, this study evaluated possible relationships between the gingival crevicular fluid (GCF) alkaline phosphatase (ALP) activity and pubertal growth spurt and dentition phase.
Materials and methods: One hundred healthy growing subjects (62 females, 38 males; mean age, 11.5±2.4 years) were enrolled into this doubleblind, prospective, cross-sectional-design study. Phases of skeletal maturation (pre - pubertal, pubertal, post - pubertal) was assessed using the cervical vertebral maturation method. Samples of GCF for the ALP activity determination were collected at the mesial and distal sites of the mandibular central incisors. The phases of the dentition were recorded as intermediate mixed, late mixed, or permanent. A multinomial multiple logistic regression model was used to assess relationships of the enzymatic activity to growth phases and dentition phases.
Results: The GCF ALP activity was greater in the pubertal growth phase as compared to the pre - pubertal and post - pubertal growth phases. Significant adjusted odds ratios for the GCF ALP activity for the pre - pubertal and post - pubertal subjects, in relation to the pubertal group, were 0.76 and 0.84, respectively. No significant correlations were seen for the dentition phase.
Conclusions: The GCF ALP activity is a valid candidate as a non - invasive biomarker for the identification of the pubertal growth spurt irrespective of the dentition phase
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