Immediate Single-Implant Placement Under Different Loading Conditions: A Retrospective Study with 1 to 5 Years of Follow-Up.

Purpose: To investigate and analyze the effects of different prosthetic protocols under different loading and occlusal conditions on the survival rates of single implants immediately placed into fresh extraction sockets of maxillary or mandibular premolars with single-stage surgery.

Materials And Methods: Patients needing replacement of a single premolar in the maxilla or mandible were included and randomly divided into three groups based on the different loading protocols: group 1 = healing abutment; group 2 = provisional crown left out of occlusion without functional loading; and group 3 = provisional crown in functional occlusion in maximum intercuspation without contact in excursions. The hypothesis was that single implants inserted into fresh extraction sockets and immediately connected to a temporary crown under functional loading would demonstrate survival rates comparable to single implants placed in the same conditions connected to a healing abutment or to an immediate temporary crown left out of occlusion.

Maxillary Premolars with Four Canals: Case Series.

The aim of this case series is to contribute to the better knowledge and management of the complex anatomical configurations of maxillary premolars with four canals. The paper explains the endodontic treatment of five maxillary premolars with four canals, with three buccal and one palatal orifices, in different patients. The cases report several approaches in the treatment of four-canal maxillary premolars including a conservative canal preparation with a hybrid shaping technique, endodontic microsurgery and the application of biomaterials.

Implant Periapical Lesion: Clinical and Histological Analysis of Two Case Reports Carried Out with Two Different Approaches.

Periapical implantitis (IPL) is an increasingly frequent complication of dental implants. The causes of this condition are not yet entirely clear, although a bacterial component is certainly part of the etiology. In this case series study, two approaches will be described: because of persistent IPL symptoms, a patient had the implant removed and underwent histological analysis after week 6 from implantation.

Comparison of immediate versus delayed implant placement in a failed implant site: A retrospective analysis of early implant survival.

Purpose: To compare immediate and delayed implant replacement at failed implant sites to evaluate the factors associated with early failure of second implants after replacement.

Materials And Methods: Data regarding early implant failure followed by replacement with another fixture in a private practice setting between 2003 and 2019 were analysed retrospectively. Early failure was defined as loss of the dental implant within 6 months of placement.

Graftless Maxillary Sinus Floor Augmentation with Simultaneous Porcine Bone Layer Insertion: A 1- to 5-Year Follow-up Study.

Purpose: Evidence suggests that maxillary sinus floor augmentation via a lateral approach can be performed without positioning a bone graft inside, when one or more implants can be placed simultaneously. The aim of this study was to test if the placement of a porcine cortical bone layer underneath the sinus membrane can increase bone formation and implant stability.

Materials And Methods: One hundred seventy-two patients with posterior maxilla atrophy needing implant rehabilitation were selected.

Statements and Recommendations for Guided Bone Regeneration: Consensus Report of the Guided Bone Regeneration Symposium Held in Bologna, October 15 to 16, 2016.

Introduction: In the past 10 years, long-term studies have demonstrated that guided bone regeneration (GBR) is a successful and reliable technique for vertical and horizontal ridge augmentation, but strict and rigorous protocols must be adopted.

Material And Methods: Because no reports have yet been published with statements and clinical recommendations for GBR, a closed meeting of all authors was organized to discuss this matter during a GBR symposium held in Bologna (Italy) in October 2016. The authors focused on the findings of systematic and narrative reviews, prepared before the meeting, covering aspects of the clinical management of GBR techniques.

Hard and soft tissue responses to the platform-switching technique.

Platform switching is a concept recently introduced in implant dentistry. It is intended to reduce the crestal bone loss that is commonly found around implants exposed to the oral environment. The aim of this study was to examine biopsy specimens to help explain the biologic processes occurring around a platform-switched implant.

Evaluation of peri-implant bone loss around platform-switched implants.

This clinical and radiographic prospective study evaluated bone loss around two-piece implants that were restored according to the platform-switching protocol. One hundred thirty-one implants were consecutively placed in 45 patients following a nonsubmerged surgical protocol. On 75 implants, a healing abutment 1 mm narrower than the implant platform was placed at the time of surgery.

Bone contact around osseointegrated implants: histologic analysis of a dual-acid-etched surface implant in a diabetic patient.

The clinical applicability and predictability of osseointegrated implants in healthy patients have been studied extensively. Although successful treatment of patients with medical conditions including diabetes, arthritis, and cardiovascular disease has been described, insufficient information is available to determine the effects of diabetes on the process of osseointegration. An implant placed and intended to support an overdenture in a 65-year-old diabetic woman was prosthetically unfavorable and was retrieved after 2 months.

[Prognostic stratification in non-ST-elevation acute coronary syndromes: how and why].

Prognostic stratification is essential for the correct management of acute coronary syndromes (ACS). Across the whole spectrum of ACS, prognosis is strongly differentiated and also easy to establish. Shock identifies a small subgroup of patients including more than 50% of total mortality of acute ST-elevation myocardial infarction (STEMI).