1,721,021 research outputs found
Use of monolithic lithium disilicate for implant abutment and crown: A clinical report
No full textBackground Lithium disilicate is usually used for producing prosthetic crowns to be cemented on teeth or implant abutments. On the contrary, its use for producing implant abutment is not reported. This report describes the use of monolithic lithium disilicate to realize implant abutment and crown. Case report A 60-year-old male patient required dental implant restoration for replacing the upper right central incisor. A lithium disilicate abutment and crown were realized by pressing. Conclusion Lithium disilicate may be a valid alternative to zirconia for producing implant abutments in the esthetic area
Full Digital Workflow for Prosthetic Full-Arch Immediate Loading Rehabilitation Using OT-Bridge System: A Case Report
Full text linkNowadays, digital technologies have brought very important advancements in clinical prosthetic dentistry. However, a full digital workflow is still considered to be challenging in the management of full-arch implant cases with immediate prosthetic loading. The aim of this case report is to show a full-digital workflow for the fabrication of an implant-prosthetic fixed provisional prosthesis for immediate loading on seven implants in the upper maxilla. The static guided implant surgery and the OT Bridge prosthetic system were used to rehabilitate the patient. In this way, the combination of a well-known surgical technique with a peculiar prosthetic system that allows for a certain degree of tolerance resulted in it being useful for full-arch immediate loading. Future research and studies are necessary to prove the reliability of this full-digital protocol
A lithium disilicate cantilever bridge to replace a maxillary lateral incisor
No full textOBJECTIVES. The rehabilitation of a maxillary lateral incisor by means of a lithium disilicate cantilever bridge is here presented.MATERIALS AND METHODS. The left maxillary central incisor was prepared with a chamfer finishing line. The root of the left maxillary lateral incisor was extracted and an acrylic temporary was placed. After 4 months, the final impression was taken. The lithium disilicate bridge was fabricated by press technique and tried on. After veneering and aesthetic check, the bridge was cemented using a composite cement.RESULTS AND CONCLUSIONS. The 24 months follow-up showed the maintenance of aesthetic and functional integration of the rehabilitation. Lithium disilicate can be used to fabricate cantilever anterior bridges in carefully selected cases.OBJECTIVES. The rehabilitation of a maxillary lateral incisor by means of a lithium disilicate cantilever bridge is here presented. MATERIALS AND METHODS. The left maxillary central incisor was prepared with a chamfer finishing line. The root of the left maxillary lateral incisor was extracted and an acrylic temporary was placed. After 4 months, the final impression was taken. The lithium disilicate bridge was fabricated by press technique and tried on. After veneering and aesthetic check, the bridge was cemented using a composite cement. RESULTS AND CONCLUSIONS. The 24 months follow-up showed the maintenance of aesthetic and functional integration of the rehabilitation. Lithium disilicate can be used to fabricate cantilever anterior bridges in carefully selected cases
Clinical and histological evaluation of thermal injury thresholds in human teeth: A preliminary study
No full textThe effect on healthy dental pulp of thermal increases ranging from 8.9 to 14.7°C was evaluated. These temperature increases correspond approximately to those caused by certain restorative procedures, such as tooth preparation with high-speed instruments and the fabrication of direct provisional crowns. Two criteria of evaluation have been used in conjunction, a clinical (symptomatic) and a histological one, to assert with greater precision potential damage to the pulp. The results suggest a low susceptibility of cells to heat, which does not appear to be a major factor of injury, at least in the short term. The main cause of postoperative inflammation or necrosis of the pulp is probably the injury of the dentine, a tissue in direct functional and physiological connection with the pulp. © 1997 Blackwell Science Ltd
A clinical evaluation of in-ceram crowns
No full textJn this investigation, 63 In-Ceram crowns were placed in 45 patients in both dental school and private practice settings. The restorations were observed for a period of 24 to 44 months, with a mean of 37.6 months. Both anterior and posterior teeth were treated and occlusal conditions were recorded. One crown fractured, yielding a 98.4% success rate. The single fracture was attributed to crown preparation geometry. © 1995, Quintessence Publishing Co. Inc. All rights reserved
IL MONTAGGIO DEI DENTI FRONTALI IN PPR REALIZZATA IN TITANIO PURO: ESTETICA E FUNZIONE. CASO CLINICO
No full textScotti et al. hanno recentemente codificato le procedure operative mirate ad ottenere un corretto scheletrato in titanio sia sotto l'aspetto clinico, sia sotto quello odontotecnico
The biocompatibility of temporary cements. Longitudinal in-vitro analyses of the pH values
No full textIn this longitudinal study the authors analyse the acid-basal characteristics in vitro of seven cements used in dentistry for a period of three weeks. The cements tested were subdivided into three groups based on their composition, whereas Life was presented separately since it is generally used as a sub-base for fillings in conservative treatment. All the materials studied alter the pH of the matter in which they are imbedded. Life and Tempbond present the highest and lowest pH values recorded during the study in vitro. The authors discuss the biological implications of these results
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