1. Stereophotometric facial changes in edentulous older adults after rehabilitation with complete denturesZala Skomina, Milan Kuhar, Miha Verdenik, Nataša Ihan Hren, 2025, original scientific article Abstract: Objectives: To evaluate the facial characteristics of edentulous older adults who underwent rehabilitation using complete dentures, and to compare them with dentate individuals. Background: Edentulism rehabilitation with complete dentures aims to restore occlusion and facial aesthetics. Materials and methods: The study included 102 edentulous participants needing prosthodontic rehabilitation with complete dentures and 30 with a natural dentition (aged >65). The 3D facial scans were performed using an Artec optical scanner. Superficial facial landmarks were identified, and 16 parameters were calculated. Regional analysis with the superimposition of two scans was used to calculate the average distances and percentage of non-matching surfaces in the 11 regions. Paired and independent t-tests (α = .05) were used to test for group differences, as appropriate. Results: After rehabilitation with complete dentures, facial changes were most noticeable in the perioral region: wider rima oris, longer upper lip, wider upper vermilion, and more protruded profile. The comparison of facial regions without and with dentures showed fuller and curvier cheeks, with no direct influence of dentures. The edentulous faces with dentures appeared shorter and more retruded than those of dentate individuals. A narrower lower vermilion, retruded upper lip, and more flattened facial profile were observed in females with dentures than in their dentate peers. Conclusion: Besides the expected positive influence of rehabilitation with complete dentures on facial appearance in the perioral region, there are some unexpected changes, such as fuller cheeks, but there is still deficiency in vertical facial dimensions and a more flattened facial profile.
Keywords: complete dentures, edentulism, facial characteristics, gerondontology, older adults, prosthodontics rehabilitation
Published in DiRROS: 14.04.2026; Views: 311; Downloads: 314
 Full text (972,65 KB)
This document has many files! More... |
2. Reference areas selection affects registration of AI-segmented mandibles acquired with CBCTKlemen Leopold, Aleš Fidler, Manushaqe Selmani-Bukleta, Milan Kuhar, 2024, original scientific article Abstract: Precise registration of sequential 3D datasets is crucial for accurate dimensional analysis. Utilizing the Local Best-Fit (LBF) algorithm and stable Registration Reference Areas (RRAs) facilitates the accurate alignment of 3D surface models. Currently, Cone-beam Computed Tomography (CBCT) and Deep Learn-ing (DL) algorithms are at the forefront for segmenting CBCT scans to monitor morphological changes in the residual alveolar ridge. This study compares the effectiveness of different RRAs in registration sequen-tial 3D surface models of partially edentulous mandibles. DL-assisted software segmented two sequential CBCTs (T0 and T1) from 10 patients, producing sequential 3D mandibular models. These models were aligned using three distinct RRAs: (i) WHOLE, encompassing the entire surface model; (ii) MND_BODY, covering the mandibular body while excluding the unstable alveolar ridge; and (iii) SPIN_FOR, incorpo-rating stable RRAs (mental foramina and mental spine). An innovative method assessed registration accu-racy by generating centroids from cross-sectional outlines of the mandibular nerve canals at the anterior third (A), medial third (B), and posterior third (C) of the posterior edentulous areas. The distance between centroids at T0 and T1 quantified registration accuracy. The MND_BODY group exhibited superior accu-racy, whereas the SPIN_FOR group showed the least, with accuracy decreasing from A to C, suggesting rotational misalignments. When selecting RRAs, both stability and spatial distribution must be taken into account. For optimal alignment, sequential 3D surface models should use RRAs that are both stable and widely distributed.
Published in DiRROS: 03.12.2025; Views: 968; Downloads: 280
Full text (1,49 MB)
This document has many files! More... |
3. Implant-prosthetic rehabilitation after radiation treatment in head and neck cancer patients : a case-series report of outcomeJasna Cotič, Jure Jamšek, Milan Kuhar, Nataša Ihan Hren, Andrej Kansky, Mutlu Özcan, Peter Jevnikar, 2017, original scientific article Abstract: Background. Slovenia has a high burden of head and neck cancer. Patients are mostly treated with surgery followed by radiation therapy. Advanced surgical and prosthodontic techniques have expanded the rehabilitation options. The aim of the study was to review the outcome of implant-prosthetic treatment after radiation therapy. Patients and methods. Twenty irradiated head and neck cancer patients who received a removable implantsupported denture at the University Medical Centre Ljubljana were included in the study. Kaplan-Meier survival analysis, Cox proportional hazard models and logistic regression were used to assess the implant survival and success rate. Results. Twenty patients had 100 implants inserted. The estimated implant survival rate was 96% after 1 year and 87% after 5 years. Failures were mostly observed before loading (91.2%). Implants inserted in the transplanted bone were significantly more likely to fail. Out of 89 implants supporting the dentures, 79 implants (88.7%) were successful, meaning that they were functionally loaded and exhibited no pain, radiolucency or progressive bone loss. Prosthetic treatment was significantly less successful in older patients. The attachment system and the number of implants did not have a statistically significant influence on the success rate. Conclusions. Implant-supported dentures have been shown to be a reliable treatment modality after head and neck cancer surgery and radiation therapy. Possible early failures should be communicated with the patients.
Keywords: head and neck cancer, radiation therapy, dental implants
Published in DiRROS: 03.06.2024; Views: 1434; Downloads: 510
Full text (586,82 KB) |
4. Priporočila za zobozdravstveno obravnavo odraslih bolnikov z rakom glave in vratu v Sloveniji, zdravljenih z obsevanjemAleš Fidler, Aleksandar Aničin, Vojislav Didanovič, Tadej Dovšak, Boris Gašpirc, Aleš Grošelj, Andrej Kansky, Matic Koren, Jana Krapež, Hojka Kuralt, Marko Kuralt, Boštjan Lanišnik, Romana Mance Kristan, Jošt Pavčič, Luka Prodnik, Peter Pukl, Tadej Ostrc, Milan Kuhar, Eva Skalerič, Robert Šifrer, Valerija Skopec, Primož Strojan, 2022, original scientific article Abstract: Priporočila za zobozdravstveno obravnavo bolnikov z rakom glave in vratu (RGV) v Sloveniji, zdravljenih z obsevanjem sledijo priporočilom The Royal College of Surgeons of England v sodelovanju z The British Society for Disability and Oral Health, dopolnjujejo Priporočila za obravnavo bolnikov z rakom glave in vratu v Sloveniji in hkrati upoštevajo obstoječe zmožnosti slovenskega zdravstvenega sistema. Namen priporočil je prepre-čevanje oz. zmanjšanje zapletov v ustni votlini, ki nastanejo zaradi obsevanja. Opredeljujejo način zobozdravstvene oskrbe pred, med in po zdravljenju raka na vseh treh nivojih zobozdra-vstvene oskrbe, kar zagotavlja njeno pravočasnost in dostopnost. Priporočila predstavljajo poenoteno mnenje vseh deležnikov na področju zobozdravstvene obravnave bolnikov z RGV v državi.
Keywords: onkologija, zobozdravstvena obravnava, obsevanje, ustna votlina, priporočila
Published in DiRROS: 14.07.2022; Views: 2088; Downloads: 815
Full text (1,45 MB) |
