İstanbul Sağlık ve Teknoloji Üniversitesi Kurumsal Akademik Arşivi
DSpace@İSTÜN, Üniversite mensupları tarafından doğrudan ve dolaylı olarak yayınlanan; kitap, makale, tez, bildiri, rapor, araştırma verisi gibi tüm akademik kaynakları uluslararası standartlarda dijital ortamda depolar, Üniversitenin akademik performansını izlemeye aracılık eder, kaynakları uzun süreli saklar ve telif haklarına uygun olarak Açık Erişime sunar.
Güncel Gönderiler
Prosthetic rehabilitation of a large maxillary defect due to nasopharyngeal tumor resection: A case report
(Dennis Barber Journals, 2025) Topuz, Buğra Tuğ; Kasıl, Ece; Ayvalıoğlu Şamiloğlu, Demet Çağıl
Introduction: Nasopharyngeal tumors are malignant neoplasms located in the epithelial lining of the nasopharynx, and they often require aggressive treatment modalities including surgery, radiotherapy, and/or chemotherapy. Surgical resection of these tumors, especially when involving adjacent maxillary and palatal structures, frequently results in large maxillofacial defects. This case report presents the comprehensive prosthetic rehabilitation of a patient with a large acquired maxillary defect following surgical resection of a nasopharyngeal tumor. Case Description: A 49 years old male patient with a large maxillary defect resulting from extensive surgical nasopharyngeal tumor resection applied to the clinic of Department of Prosthodontics. Following surgery, the patient had received postoperative radiotherapy and chemotheraphy. Prior to definitive prosthetic rehabilitation, endodontic and periodontal treatments of the remaining teeth were completed. Support was taken from the remaining teeth (16-15, 12-11-21- 22) to fabricate a precision attachment-retained obturator that provided partial separation between the oral and nasal cavities. A quadrilateral design was performed. For the mandibular partial edentulism, a precision attachment-retained, metal framework removable partial denture was designed. Results: The patient’s issues with speech and nutrition deficiency were resolved with the obturator prosthesis and the esthetic demands were fullfilled. Conclusion: Within the scope of this case, the use of an obturator provided functional and esthetic rehabilitation of a patient with a large maxillary defect following oncologic surgery.
Prosthetic approach to tooth structure damage associated with dietary habits and bruxism: A case report
(Dennis Barber Journals, 2025) Özkan Dayıoğlu, Selin; Ayvalıoğlu Şamiloğlu, Demet Çağıl; Rastgar Safari, Mahya
Introduction: Tooth structure loss resulting from parafunctional habits such as bruxism, compounded by erosive dietary factors, presents a multifactorial challenge in restorative dentistry. Patients often exhibit a combination of advanced anterior wear, dentin hypersensitivity, and non carious cervical lesions. Successful rehabilitation requires a minimally invasive, esthetically driven, and functionally stable prosthetic approach. This case presents a comprehensive adhesive and occlusal strategy for managing tooth wear caused by bothbruxism and dietary habits. Case Description: A 54-year-old female patient presented with severe anterior tooth wear, dentin hypersensitivity, and non carious cervical lesions attributed to parafunctional habits, particularly bruxism. The maxillary central incisors exhibited significant structural compromise and esthetic concerns. To fulfill the functional and esthetic needs of the patient, lithium disilicate crowns were placed on the maxillary central incisors. Additionally, seven maxillary anterior teeth were restored using minimally invasive lithium disilicate laminate veneers. A monolithic zirconia crown was placed on the maxillary first molar to reinforce posterior occlusal support. Tooth preparations followed adhesive principles, and the occlusion was carefully evaluated and adjusted. A protective occlusal splint was delivered post-treatment to eliminate future damage. Discussion: This case emphasizes the importance of early diagnosis and a comprehensive, adhesive-based prosthodontic treatment plan in managing bruxism induced tooth wear. Lithium disilicate ceramics allowed for both conservative tooth preparation and high esthetic outcomes. The use of a monolithic zirconia crown in the posterior ensured durability. The integration of occlusal assessment and an occlusal splint served as critical components for maintaining long-term stability. Conclusion: Through a customized, adhesive prosthodontic strategy, it was possible to restore esthetics, relieve sensitivity, and prevent further damage in a patient affected by bruxism.
Photogrammetry-assisted digital workflow for full-arch monolithic zirconia restorations: A clinical report
(Dennis Barber Journals, 2025) Güler, Edanur; Sabancı, Nibal; Dilaverler Yardım, Esra Ayşe
Introduction: Achieving cross-arch accuracy and passive fit remains a major challenge in conventional impression techniques for full-arch implant restorations. In contrast, photogrammetry-assisted digital workflows offer enhanced precision, efficiency, and predictability. This clinical report describes the rehabilitation of a 56-year-old fully edentulous female patient using a fully digital protocol and monolithic zirconia prostheses for both jaws. Case Description: Twelve endosseous implants (Ø3.7 mm, length 10–12 mm; ETK, France) were placed in anterior and posterior regions of the maxilla and mandible. After successful osseointegration, multi-unit abutments were connected. Final impressions were obtained using a hybrid protocol that combined photogrammetry (Imetric-Icam, Switzerland) with intraoral scanning (iTero Lumina, USA). With reference bars in place, interocclusal records and vertical dimension were registered using C-type vinyl siloxane ether (Zetaplus, Zhermack, Italy). Facial photographs and marker data were recorded in natural head position and transferred to the laboratory. Digital alignment and virtual articulation (Artex, Germany) were performed. A CAD-CAM resin mock-up (Armaresin, Turkey) was fabricated and evaluated intraorally for esthetics and occlusion. Final restorations were designed as full-arch, screw-retained prostheses using monolithic zirconia (Ceramill Zolid FX, Amann Girrbach, Austria) and torqued to 15 Ncm. Discussion: The photogrammetry-based workflow demonstrated superior cross-arch accuracy and passive fit compared to conventional techniques. The try-in allowed for verification of occlusal harmony, vertical dimension, and esthetics in a single appointment. Follow-up at 1-, 3-, 6-month, and 1-year intervals revealed no peri-implant complications. The patient reported high satisfaction in function and esthetics. This case highlights the clinical advantages of photogrammetry and monolithic zirconia in streamlining full-arch implant rehabilitation.
Mandibular overdenture supported by two canines: A two-year clinical follow-up case report
(Dennis Barber Journals, 2025) Eyidemir, Bahar; Güler, Edanur; Papatya, Zeynep; Dilaverler Yardım, Esra Ayşe
Introduction: Mandibular complete dentures often present insufficient retention and stability due to anatomical limitations in edentulous patients. Although implant therapy is commonly used to address these issues, it may not be feasible in patients with systemic conditions that contraindicate surgical interventions. In such cases, preserving and utilizing remaining natural teeth as abutments can enhance prosthetic success while minimizing invasiveness and improving patient comfort. Tooth-supported overdentures are a valuable alternative, particularly when strategic teeth such as canines are available. Case Description: A 60-year-old male patient with a history of diabetes mellitus presented with complaints of instability in his mandibular complete denture. The patient exhibited a fully edentulous maxilla and retained only two mandibular canines. Implant therapy was contraindicated due to his systemic condition. As an alternative, a tooth supported mandibular overdenture was planned. Clinical and radiographic evaluations confirmed that both canines were periodontally and structurally suitable for overdenture support. Endodontic treatment was performed, and the clinical crowns were reduced to allow sufficient space for prosthetic components. Cast copings with ball attachments were fabricated and cemented. A mandibular overdenture incorporating matching female housings was constructed and delivered. A conventional complete denture was also fabricated for the maxilla. The patient was recalled every six months for clinical evaluation and maintenance. Over a two-year follow-up period, no complications such as attachment loosening, mucosal irritation, or abutment failure were observed. The patient reported high satisfaction in terms of masticatory function, prosthesis stability. Discussion: This case demonstrates that, in patients for whom implant therapy is contraindicated, mandibular overdentures supported by two natural canines with ball attachments can offer a stable, functional, and long-term treatment solution. Tooth-supported overdentures provide biomechanical advantages and improve patient satisfaction through a minimally invasive approach. The strategic use of retained natural teeth, particularly canines, remains a clinically effective alternative for managing mandibular edentulism.
Functional and esthetic outcomes of full-mouth rehabilitation following vertical dimension reestablishment using posterior composite build-ups: A case report
(Dennis Barber Journals, 2025) Papatya, Zeynep; Güler, Edanur; Karabulut, Dicle; Özdal, Umut
Introduction: Loss of vertical dimension of occlusion (VDO) is a clinical condition that can significantly impact both function and esthetics. It may lead to impaired mastication, temporomandibular joint (TMJ) discomfort, facial disharmony, and reduced quality of life. Restoring VDO requires a systematic approach involving proper evaluation, neuromuscular adaptation, and establishment of a stable occlusal and TMJ relationship. This case report presents the functional and esthetic outcomes of full-mouth rehabilitation following VDO reestablishment using posterior composite build-ups and a gradual increase in occlusal height to promote TMJ stabilization. Case Description: A patient with reduced VDO was treated with posterior composite resin build-ups. The vertical dimension was increased by 1 mm per week over five weeks, allowing neuromuscular adaptation and TMJ repositioning. After successful adaptation, definitive restorations were completed. Pressable ceramic (e.max) laminate veneers were placed from first premolar to first premolar (5–5) in both arches. Zirconia crowns were used on the first and second molars (6 and 7). Throughout the procedure, esthetic, functional, and occlusal parameters were carefully monitored to ensure optimal outcomes. The patient adapted well to the new VDO, showing marked improvement in facial esthetics and occlusal function. High patient satisfaction was reported at the conclusion of treatment. Discussion: This case highlights the effectiveness of a controlled, stepwise approach to VDO restoration. Using composite build-ups allowed reversible testing of neuromuscular tolerance before final restorations. The combination of e.max veneers and zirconia crowns restored function and esthetics while preserving TMJ stability. No complications were observed during the one-month follow up, supporting the short-term success of the approach. Long term monitoring is essential to confirm the durability of results.
