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Image processing techniques and orthodontic related apical root resorption prediction models
Published in R.M. Natal Jorge, J.C. Reis Campos, Mário A.P. Vaz, Sónia M. Santos, João Manuel R.S. Tavares, Biodental Engineering IV, 2017
S. Alves, H. Silva, L. Mesquita, N. Lavado, M. Lopez
The population sample included 79 males and 133 female patients, with a mean age of 17.24 years (SD ± 6.8). Average treatment time was 35.56 months (SD ± 10.13). Nine clinical and treatment variables were analyzed: gender, age, treatment duration, premolar extractions, skeletal pattern, Hyrax appliance, overjet, anterior open bite and tongue thrust.
Dental Anatomy and Occlusion
Published in Jeffrey R. Marcus, Detlev Erdmann, Eduardo D. Rodriguez, Essentials of CRANIOMAXILLOFACIAL TRAUMA, 2014
Pedro E. Santiago, Lindsay A. Schuster
Overjet is the horizontal relationship (sagittal or anteroposterior), or the distance between the incisal edge of the most anteriorly positioned maxillary central incisor and the labial surface of the opposing mandibular central incisor, when the teeth are in centric occlusion (Fig. 4-15). The relationship is expressed in millimeters. Mean overjet in adults with normal occlusion is 2.2 mm for men and 2.5 mm for women. Negative overjet, also known as anterior crossbite, is when the maxillary central incisor occludes behind the lower central incisor (Fig. 4-16). It is given as a negative number in millimeters. If there is no anterior vertical or horizontal overlap, the relationship is called edge to edge.
Early orthodontic treatment in a Finnish public health centre: a retrospective cross-sectional study
Published in Acta Odontologica Scandinavica, 2023
Annika Arpalahti, Anni Saarnio-Syrjäläinen, Sirkku Laaksonen, Heidi Arponen
Mean value and standard deviation or range were calculated for continuous variables. Prevalence percentage was determined for Angle class molar relationship and different appliances used. The number of children examined by different orthodontists and postgraduate students was recorded, and the percentages of children deemed eligible for treatment were calculated. Mean differences in overjet and overbite between children in orthodontic treatment and those with no current treatment need were compared with an independent samples t-test. Statistical significance was set at p < .05. Correlation between age and appliance type was evaluated with a point-biserial correlation. Chi-square test was applied to analyse the association between appliance type and primary malocclusion diagnosis as well as between orthodontists’ and postgraduate students’ evaluation of treatment need. No data were missing for the primary outcome variables of age and treatment status. Missing completely at random were individual measurements on occlusal features due to inconsistency in patient documentation.
Long-term patient-reported outcomes after anterior distraction osteogenesis of the maxilla in patients with cleft
Published in Journal of Plastic Surgery and Hand Surgery, 2023
Lina Yasin, Magnus Becker, Henry Svensson, Anna-Paulina Wiedel
The motivation for this descriptive long-term follow-up study arose in 2017 when the CLP treatment team experienced a weakness in their capacity to give adequate preoperative information to patients who were being considered for DO. At that time, a few patients had been operated with DO since the start in 2004. Due to the uniqueness of the procedure, the responsible senior oral- and maxillofacial surgeon (BS) had entered short notes on those patients who had been treated so far. From these notes, combined with a pilot screening of indicated medical records, it was possible to identify 16 individuals who possibly would be available for a long-term follow-up. They were all invited by ordinary mail to attend the outpatient unit of the Department for Oral- and Maxillofacial Surgery for a follow-up including clinical investigation. This involved obtaining dental casts, lateral cephalograms, speech recording, photography, and answering a questionnaire. Fourteen patients accepted the invitation and were accordingly investigated. Two patients declined participation because they resided a long distance away. Analysis of the various objective findings is ongoing and results regarding dental occlusion in terms of positive overjet are set. The present study analyses the patients’ subjective reports.
Malocclusion and oral health-related quality of life among young Danish adults. Is there a difference between subjects who received orthodontic treatment during adolescence and subjects without treatment need? A cross-sectional study
Published in Acta Odontologica Scandinavica, 2022
Arwa Gera, Shadi Gera, Paolo M. Cattaneo, Marie A. Cornelis
Despite not being judged in need of OTN during childhood, upon adulthood, untreated Danes had a significantly higher OTN (DAI) than Danes treated during adolescence. Among the treated subjects, 37% fell into the OTN categories (DAI grades 2–4) in contrast to the untreated subjects where 64% had a treatment need.Untreated young Danish adults had a significantly higher deviation from normal occlusion (PAR) and anterior mandibular crowding (LII) than young Danish adults treated during adolescence.The prevalence of Angle Class I, II and III molar relationships was similar among young Danish adults whether they had been treated during adolescence or not. Class I occlusion was the most prevalent molar relationship; 51% (Class II; 41%, and Class III; 8%). Overjet was normal in both the treated and untreated subjects.Approximately ten years post-treatment, treated subjects had significantly larger inter-canine and inter-premolar distances than untreated young adults.No relationship was observed between total OHIP-14 and malocclusion traits (LII, PAR, DAI), age, gender or presence/absence of previous orthodontic treatment. However, the DAI score was significantly correlated with OHIP-14 functional limitation domain.