To present the 2-year clinical outcomes of short-span implant-supported hybrid composite restorations, namely single crowns (SCs) and fixed partial prostheses (FPPs), produced using tilting stereolithography (TSLA). This retrospective study was based on data from a cohort 145 patients, treated between June 2021 and June 2023, with 185 fixed short-span implant-supported hybrid composite restorations (Irix Max®, RD Printing, Thiene, Vicenza, Italy) produced using tilting stereolithography (TSLA). The restorations were manufactured through a fully digital, model-free workflow, which included intra-oral scanning, computer-aided design (CAD) and additive manufacturing with the TSLA system (Dfab®, RD Printing). Primary outcome measures included marginal fit, occlusal and interproximal contact quality and colour matching of the restorations, all evaluated by two experienced clinicians (a prosthodontist and a periodontist, who were not directly involved in the treatment of the patients). Each restoration was rated at the time of delivery, using a 5-point scale (5 being excellent, 4 satisfactory, 3 acceptable, and 2 or 1 indicating poor quality). The secondary outcomes assessed comprised the survival and success (i.e. absence of complications) rates of the restorations, during the entire follow-up period. Statistical analysis was performed on the collected data. Among the 3D-printed hybrid composite restorations, 95 had a 2-year follow-up, whereas 90 had only a 1-year follow-up. Overall, the restorations demonstrated excellent performance in terms of marginal fit and contact accuracy, both occlusal and interproximal. Their aesthetic integration was also deemed satisfactory. During the follow-up period, all restorations remained functional, with a low complication rate (1.0 % biological and 3.7 % prosthetic complications), resulting in an overall success rate of 95.1 %. Implant-supported short-span hybrid composite restorations manufactured using TSLA technology demonstrated high clinical accuracy and showed a low rate of complications over a 2-year period. TSLA printing technology shows potential for the definitive prosthetic treatment of small edentulous spaces.

To evaluate the 3-year clinical performance of additively manufactured (AM) hybrid composite short-span implant-supported restorations fabricated through tilting stereolithography (TSLA) within a fully digital workflow. This retrospective clinical study included 218 patients rehabilitated with 278 implant-supported restorations fabricated from a ceramic-filled hybrid composite material using TSLA technology. The restorations comprised 207 single crowns (SCs) and 71 fixed partial dentures (FPDs), supported by 360 implants. All rehabilitations were produced through a complete digital workflow. Primary outcomes included marginal adaptation, occlusal and interproximal contact quality, and chromatic integration, assessed at delivery by two independent evaluators using a 5-point scoring system. Secondary outcomes included restoration survival and restoration success during follow-up. Kaplan-Meier survival analysis was performed. At delivery, both evaluators assigned predominantly excellent or satisfactory scores for marginal adaptation, occlusal contacts, interproximal contacts and chromatic integration, with no significant differences between restoration types (p > 0.05). During follow-up, 3 biological complications (1.1%) and 19 prosthetic complications (6.8%) were recorded, including 7 cases of abutment screw loosening, 6 decementations and 6 restoration fractures. Two implants failed during early healing, while three patients were lost to follow-up during the third year. Kaplan-Meier analysis revealed a cumulative restoration survival rate of 97.8% and an overall restoration success rate of 92.0% after 3 years. Within the limitations of this short-term study, TSLA-manufactured hybrid composite restorations demonstrated favourable clinical accuracy, high survival rates and acceptable short-term clinical performance. Hybrid composite restorations fabricated through TSLA may represent a promising option for definitive short-span implant-supported rehabilitations within contemporary digital prosthodontic workflows.

Objectives: A comprehensive diagnosis and treatment were carried out in 104 newborns, including 48 children diagnosed with unilateral cleft lip and palate (UCLP) and 56 patients diagnosed with bilateral cleft lip and palate (BCLP). The control group consisted of 116 medical records and diagnostic models of jaws from newborns with UCLP/BCLP, which were analysed before and after orthodontic correction using a removable facebow with headgear attachment. Methods: All newborns (n = 104) underwent orthodontic correction to reposition of the alveolar process fragments in UCLP and intermaxillary bone in BCLP using mini-implants and elastic traction devices/springs, followed by primary cheiloplasty. Cheiloplasty was performed one month after fragment alignment had been achieved. Results: Statistical analysis showed that orthodontic correction using mini-implants and elastic traction was highly effective. In the UCLP group, normalised alignment of alveolar fragments was achieved in 97.9% of cases (p = 0.0000000016); in the BCLP group, normalised positioning of the intermaxillary bone was observed in 96.42% (p = 0.00000000007). A direct comparison between the treatment and control groups revealed consistent significance across all diastasis measurements, supporting the clinical advantage of fixed orthodontic approaches. Conclusions: The clinical data and statistical analysis indicate that the fixed orthodontic appliance combined with mini-implants and elastic traction is effective. This approach normalises alveolar and intermaxillary positioning and provides optimal preoperative conditions for primary cheiloplasty and subsequent uranoplasty. It also shortens rehabilitation duration and leads to stable aesthetic and functional results.

Background and objectives: Clear aligner therapy combined with digital planning and remote monitoring is increasingly adopted in orthodontics, yet prospective comparative data in adolescents remain limited. This prospective non-randomized study compared short-term outcomes of an aligner-based digital orthodontic pathway versus conventional fixed appliances in adolescents with mild-to-moderate mandibular crowding. Materials and methods: In this prospective non-randomized comparative study, 78 adolescents (aged 12–18 years) with mild-to-moderate mandibular anterior crowding received either conventional fixed appliances or a digital pathway incorporating intraoral scanning, virtual treatment planning, clear aligners, and AI-assisted remote monitoring. Follow-up lasted 24 weeks. The primary outcome was change in Little’s Irregularity Index (LII). Secondary outcomes included treatment duration, clinic visits, chair time, patient satisfaction, and caregiver satisfaction. Results: Both groups showed substantial alignment improvement. Mean LII reduction was 5.09 ± 0.57 mm in the digital group versus 4.29 ± 0.37 mm in the conventional group, with the between-group difference of 0.80 mm (95% CI, 0.59–1.02 mm), not reaching the prespecified clinical relevance threshold of 1.2 mm. The digital pathway required fewer in-office visits (2.46 vs. 4.46, p < 0.001), shorter chair time (93.1 vs. 170.8 min, p < 0.001), and shorter alignment duration (21.4 vs. 24.0 weeks, p < 0.001). Patient satisfaction (8.85 vs. 6.97, p < 0.001) and caregiver satisfaction (92.3% vs. 69.2%, p = 0.019) favored the digital pathway. Unplanned visits were numerically less frequent in the digital group (2.6% vs. 15.4%). Conclusion: In this non-randomized study, the digital orthodontic pathway and conventional fixed appliances produced comparable short-term alignment outcomes in adolescents. The digital approach demonstrated advantages in treatment efficiency, resource utilization, and patient experience. These findings support the integration of digital technologies in adolescent orthodontic care, though randomized trials are needed to confirm these observations.