The sample comprised lateral cephalograms of 21 subjects with normal occlusion (11 male, 10 female), taken at 17 (T1) and 61 years of age (T2). Anteroposterior and vertical maxillomandibular relationships, and dentoalveolar and soft tissue changes were analyzed. Interphase comparisons were performed using paired t-tests. Differences between sexes, and subgroups with and without tooth loss were evaluated using t-tests (p<0.05).Results: Maxillary and mandibular anterior displacement, and facial and ramus height increased from T1 to T2. Maxillary molars showed significant mesial angulation. Maxillary and mandibular molars, and mandibular incisors developed vertically during the evaluation period. Soft tissue changes included a decrease of the nasolabial angle, upper and lower lip retrusion, decrease of upper lip thickness and increase of the lower lip and soft chin thickness.Maxillary incisor exposure by the upper lip decreased 3.6 mm in 40 years.Males presented counterclockwise rotation of the mandible, whereas females showed mandibular clockwise rotation and backward displacement of the chin. The group with tooth loss showed a greater increase of the posterior facial height and ramus height. Conclusion: We observed aging changes in dentoskeletal structures and soft tissue, as well as sexual differences for craniofacial changes during the maturational process. Subjects with multiple tooth losses showed a greater increase in mandibular ramus height.
Introduction: Quarantine protocols for coronavirus disease 2019 (COVID-19) pandemic has modified orthodontic appointments. Objective: to evaluate self-reported experience and needs of orthodontic patients during the quarantine period without in-person appointments. Methods: Thirty patients, aged 8 to 21 years, under active orthodontic treatment were randomly selected. A phone call questionnaire including questions on physical and emotional impacts of the quarantine of COVID-19 was applied during the second month of Brazilian quarantine. Results: Sixteen percent of the patients reported pain related to the orthodontic appliance. Appliance breakage was observed in 23.33%. Twenty percent felt the need of an emergency orthodontic appointment and 3.33% visited a private practice. Moreover, 23% reported that even in an emergency need, they would not search for an appointment, preferring to communicate with the orthodontist by WhatsApp. Oral hygiene self-perception status showed improvement in 36.67% and worsening in 6.67% of the patients, while 56.66% reported maintenance of the same hygiene status. Sixty percent were concerned about the orthodontic treatment. General concerns were primary related to health and a possible extension of the quarantine time. Conclusions: During COVID-19 quarantine, orthodontic patients demonstrated a low frequency of orthodontic appliance interference in daily life, and most of them reported a maintenance of oral hygiene habits. The frequency of appliance related pain and breakage was 16.67% and 23.33%, respectively. Patients’ main concern during the quarantine period was the fear of getting sick and the uncertainness about the extension of the quarantine period.
Objective: To compare the dentoskeletal effects of rapid (RME) and slow (SME) maxillary expansion in patients with bilateral complete cleft lip and palate (BCLP). Materials and Methods: This was a secondary analysis of a previous randomized controlled trial (RCT). Forty-six patients (34 male, 12 female) with BCLP and posterior crossbite (mean age of 9.2 years) were randomly assigned to two study groups. Group RME comprised subjects treated with Haas/Hyrax expander. Group SME included patients treated with quad-helix appliance. Cone-beam computed tomography (CBCT) was performed before expansion (T1) and after appliance removal at the end of a 6-month retention period (T2) for a previous RCT that compared the transverse skeletal effects of RME and SME. CBCT-derived cephalometric images were generated and cephalometric analysis was performed using Dolphin Imaging Software (Chatsworth, Calif). Intergroup comparisons were performed using t tests (P < .05). Results: Baseline forms were similar between groups. No significant differences between RME and SME groups were found. Conclusions: Rapid and slow maxillary expansion produced similar sagittal and vertical changes in patients with BCLP. Both Haas/Hyrax and quad-helix appliances can be used in patients with vertical facial pattern. Clinical relevance: RME and SME can be equally indicated in the treatment of maxillary arch constriction in patients with BCLP.
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