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J Clin Orthod. 2026 Apr;60(4):269-282.

NO ABSTRACT

PMID:42140547

Int Orthod. 2026 Apr 24;24(3S):101173. doi: 10.1016/j.ortho.2026.101173. Online ahead of print.

ABSTRACT

AIM: To evaluate simulated miniscrew trajectory length in the mandibular buccal shelf (MBS) area in order to identify the most suitable site for miniscrew placement at different insertion angles. Effects of side, sex, and facial pattern were also investigated.

MATERIALS AND METHODS: Cone-beam computed tomography (CBCT) scans of lower arches from 60 patients, recruited between January 2018 and December 2022, were retrospectively analysed. The sample was divided into three subgroups according to vertical facial pattern. Miniscrew insertion was simulated at two distances from the cementoenamel junction (CEJ) (4 and 6mm) and at three inclination angles (70°, 80°, and 90°). Statistical analyses were performed to detect any differences related to sex, facial pattern or side. Subsequently, a step-by-step analysis was conducted to determine the site for miniscrew insertion with simulated miniscrew trajectory length, and an anatomical description of this area is also provided. Statistical significance was set at P<0.05.

RESULTS: Overall, bone thickness and depth showed a consistent tendency to increase distally and apically, regardless of insertion angle. No clinically significant differences were observed between sides, while sex differences were noted in only two measurements. Differences among facial patterns were detected for approximately 25% of the measurements. The most favourable sites for miniscrew placement in the MBS area were located near the lower second molar.

CONCLUSIONS: The disto-buccal aspect of the second molar, at 4mm from the CEJ and 80°, with a mean value of 16.49±4.83mm, offers the most favourable conditions for miniscrew placement, although others are possible. Pre-drilling is recommended to reduce fracture risk.

PMID:42033856 | DOI:10.1016/j.ortho.2026.101173

J Orofac Orthop. 2026 Mar 3. doi: 10.1007/s00056-026-00650-0. Online ahead of print.

ABSTRACT

OBJECTIVE: To evaluate the in vivo accuracy of guided palatal miniscrew insertion, focusing on the effect of insertion side, frontal insertion angle, and miniscrew length.

MATERIALS AND METHODS: In all, 52 palatal miniscrews were inserted using computer-aided design/computer-aided manufacturing (CAD/CAM) surgical guides in 20 patients (average age: 19.74 years ± 6.83). Digital models were acquired after miniscrew insertion and scanbody application. Then, linear and angular discrepancies between planned and realized miniscrew positions were evaluated by superimposing the reference model with the final postinsertion model. Discrepancies are recorded and compared to absolute precision (hypothetical). The effect of side, frontal insertion angle, and miniscrew length on accuracy were investigated.

RESULTS: Mean linear total discrepancies were 1.10 ± 1.01 mm and 1.71 ± 1.10 mm at the miniscrew head and tip points, respectively. Mean angular discrepancies were 5.90 ± 6.06° in the transverse (XY), 2.65 ± 2.47° in the sagittal (YZ), and 3.02 ± 2.65° in the coronal (XZ) plane. All discrepancies were significantly different to absolute precision (p < 0.001), although not to an extent considered clinically relevant. Neither side nor frontal insertion angle (clinical factors), or miniscrew length (structural factor) significantly impacted accuracy.

CONCLUSION: CAD/CAM surgical guides ensured clinically acceptable accuracy despite significant deviations from absolute precision. The insertion side, frontal insertion angle, and miniscrew length had minimal influence on accuracy, and therefore on outcome. Further studies should explore the effects of additional clinical, procedural, anatomical, and structural variables.

PMID:41774123 | DOI:10.1007/s00056-026-00650-0

J Orofac Orthop. 2026 Jan 29. doi: 10.1007/s00056-025-00638-2. Online ahead of print.

ABSTRACT

AIM: The aim of this retrospective study was to evaluate the accuracy of rotational movements of maxillary and mandibular canines and premolars achieved using clear aligners combined with a segmental lingual appliance, as planned in the digital setup, and to compare these results with those obtained using clear aligners alone.

MATERIALS AND METHODS: This retrospective cohort study included 40 adult patients, analyzing 40 teeth (20 canines and 20 premolars), each presenting at least 15° of rotation. The sample was divided into two groups: a study group treated with F22 aligners (Sweden & Martina, Due Carrare, Padua, Italy) combined with a segmental lingual appliance to correct rotation without attachments and a control group treated with F22 aligners using vestibular attachments to facilitate the rotational movement. Digital models acquired at three stages-pretreatment (T0), ideal posttreatment (T1), and actual posttreatment (T2)-were analyzed using visual aesthetic malocclusion (VAM, Vectra, Canfield Scientific, Fairfield, NJ, USA) software to assess rotation values and calculate imprecision and accuracy for each tooth. Statistical analysis was conducted to compare the two groups.

RESULTS: The study group showed significantly higher accuracy in rotational movements compared to the control group. The mean accuracy was 88.3% for the hybrid approach, versus 55.7% for clear aligners with attachments alone, and this difference was statistically significant (p < 0.01). This improvement was consistent across both canines and premolars, with statistically significant differences in all subgroups.

CONCLUSION: The combination of clear aligners with a segmental lingual appliance provided superior control in managing severe rotations of rounded teeth, resulting in greater predictability compared with aligners alone.

PMID:41609796 | DOI:10.1007/s00056-025-00638-2

Am J Orthod Dentofacial Orthop. 2026 Feb;169(2):133-134. doi: 10.1016/j.ajodo.2025.11.006.

NO ABSTRACT

PMID:41581975 | DOI:10.1016/j.ajodo.2025.11.006

Am J Orthod Dentofacial Orthop. 2026 Feb;169(2):135. doi: 10.1016/j.ajodo.2025.11.010.

NO ABSTRACT

PMID:41581979 | DOI:10.1016/j.ajodo.2025.11.010

Int Orthod. 2025 Dec 24;24(2S):101111. doi: 10.1016/j.ortho.2025.101111. Online ahead of print.

ABSTRACT

This case report describes a complex Class III high-angle case in an adult patient treated with preadjusted lingual appliance and premolar extractions. With the twofold aim of obtaining aesthetic improvement and ideal occlusal relationship, accurate set-up planification and linear biomechanical strategies, including lower incisors torque control, are needed to achieve the planned results. An auxiliary torque spring was inserted in order to obtain lower central incisors decompensation, for better occlusal and periodontal outcome. This case report demonstrates the possibility of solving successfully Class III malocclusion in adult patient by means of a completely invisible technique, with an orthodontic camouflage treatment by an ideal control of lower incisors torque, improving at the same time the patient facial aesthetics.

PMID:41447874 | DOI:10.1016/j.ortho.2025.101111

Int Orthod. 2025 Dec 24;24(2S):101113. doi: 10.1016/j.ortho.2025.101113. Online ahead of print.

ABSTRACT

This case report describes a complex full-step Class II high-angle case in an adult patient treated with lingual straight-wire appliance, premolar extractions and orthognathic surgery. With the twofold aim of obtaining ideal occlusal relationship and aesthetic improvement, surgical treatment with appropriate biomechanical strategies, including anchorage control during extraction space closure, are needed to achieve the planned results. This case report demonstrates the possibility of solving successfully severe sagittal, transverse and vertical discrepancies in an adult patient with surgical treatment by means of a completely invisible technique. This report also underlines the need for precise biomechanical control, including set-up overcorrections and miniscrews to manage anchorage control, in cases of extraction in lingual orthodontics. A refinement with composite reconstructions was performed at the end to obtain the best aesthetic and functional result.

PMID:41447876 | DOI:10.1016/j.ortho.2025.101113

J Orofac Orthop. 2025 Nov 27. doi: 10.1007/s00056-025-00626-6. Online ahead of print.

NO ABSTRACT

PMID:41307572 | DOI:10.1007/s00056-025-00626-6

Sensors (Basel). 2025 Nov 20;25(22):7081. doi: 10.3390/s25227081.

ABSTRACT

The progressive aging of the population requires reliable, non-invasive, and real-time tools to monitor hydration, prevent dehydration-related complications, and promote active aging in elderly patients. Wearable sensors based on interdigitated electrodes (IDEs) and on Electrochemical Impedance Spectroscopy (EIS) represent a promising tool thanks to their miniaturization, sensitivity to dielectric variations with humidity, and compatibility with flexible substrates. This study reports the design, fabrication, and metrological characterization of inkjet-printed IDEs for skin hydration monitoring, as a building block of a multisensor wearable device. IDEs were fabricated on polyimide substrates using silver nanoparticle-based ink. Their characterization involved the following: (i) morphological evaluation by scanning electron microscopy; (ii) EIS measurements in KCl solutions, leading to developing a regression model to correlate impedance with salt concentration; (iii) in vitro EIS validation on agar gel samples, which demonstrated a robust linear relationship between the impedance phase shift at 199.5 Hz and water loss, with consistent sensitivity values across sensors. The results confirm the feasibility of IDEs for hydration monitoring, identifying optimal frequency ranges and validating regression models. These findings represent a critical step toward the development of multisensor wearable devices for elderly monitoring, enabling decentralized and continuous health monitoring to improve healthcare sustainability and telemedicine.

PMID:41305287 | DOI:10.3390/s25227081