Whether endothelial dysfunction after sirolimus-eluting stent (SES) implantation is persistent has not been fully evaluated. Endothelial function was evaluated in 152 lesions that underwent follow-up coronary angiography after SES implantation. Lesions were classified into 2 groups according to the duration between SES implantation and follow-up: ≤12 months (n = 95) ...

BACKGROUND: While several studies have reported endothelial dysfunction after drug-eluting stent (DES) implantation, their study methods differed and the results were varied. METHODS AND RESULTS: A literature search was performed using PubMed where 14 clinical studies (537 patients) including two randomized trials were identified. All studies assessed endothelial dysfunction 3-14months ...

Abstract Fractal patterns are frequently found in the Nature, but they are difficult to reproduce in artificial objects such as implantable materials. In this article, a definition of the concept of fractals for osseointegrated surfaces is suggested, based on the search for quasi self-similarity on at least 3 scales of ...

To prospectively assess surgical and prosthetic care and aftercare related to the placement of implant-retained dental crowns after local bone augmentation in patients missing one tooth in the maxillary aesthetic region. Ninety-three patients were randomly allocated to one of three local augmentation groups: (1) chin bone; (2) chin bone covered ...

Pre-implant augmentative surgery is a prerequisite in many cases in the anterior maxilla to achieve a stable, long-term esthetic final result. The aim of the present study was to evaluate the outcome of ridge augmentation with cancellous freeze-dried block bone allografts in the anterior atrophic maxilla followed by placement of ...

Vascular closure devices are used to provide quick hemostasis and early ambulation after percutaneous interventions. The Angio-Seal (AS) vascular closure device forms a mechanical seal by closing the puncture site located between a bioabsorbable anchor within the lumen and a collagen sponge on the adventitia. Although morbidities associated with AS ...

Implant surface topography is one of the most important factors affecting the rate and extent of osseointegration. Randomly micron-roughened surfaces have been documented to support osteoblast adhesion, differentiation, and mineralized phenotype, and thus favoring bone fixation of implants to host tissues. However, few studies have been done yet to investigate ...

PURPOSE: To avoid complex procedures such as bone grafts in the atrophied edentulous sites, tilted placement of tapered implants using a modified surgical template was evaluated. MATERIALS AND METHODS: Fifteen patients (13 women, 2 men) were treated with 24 fixed implant-supported prostheses. Patients' ages ranged from 31 to 77 yrs ...

Aims: For the purpose of visual rehabilitation of subjects with photoreceptor degeneration, an implantable microelectronic device for epiretinal stimulation was developed. Our study aimed to show whether implantation and explantation could be conducted safely and to investigate tissue compatibility. Methods: The device was implanted in 5 Göttinger minipigs. Four weeks ...

Abstract Implants integrated into bone have revolutionised the retention of total nasal prostheses. However, it may be difficult to identify available sites for placement of the implant after excision. In addition, it is ideal to minimise wide bony exposure after radiotherapy to avoid compromising the blood supply. In this paper ...

External inflammatory root resorption after luxation injury is a frequent complication. This article describes a case of extensive external root resorption in the middle third of the root of a maxillary right incisor. Root canal treatment was performed followed by surgical intervention. The resorptive defect was debrided and part of ...

Oro-antral communications (OAC) greater than 4-5mm in diameter can seldom be counted on to heal spontaneously without the necessity for surgical closure. The initial experience in applying an absorbable polyglactin/polydioxanon implant (Ethisorb(®)), in non-surgical closure of OAC ranging from 5 to 7mm in diameter, is presented. Twelve patients of varying ...

This clinical report presents a simplified surgical procedure for accessing the maxillary sinus antrum via lateral and crestal approaches, which reduces the potential for sinus membrane perforation and subsequent complications when graft materials and dental implants are placed into the sinus. Due to visual limitations, perforations and associated complications can ...

Objective: To report a surgical implantation of the Vibrant Soundbridge (VSB) middle ear implant in dogs. Study Design: Pilot study. Animals: Dogs (n=3). Methods: A lateral approach to the tympanic bulla was used to insert the floating mass transducer of the VSB into the tympanic bulla. Using microscopic guidance the ...

The present study was aimed to assess the feasibility of using decellularized aortic allograft in a rat small animal surgical model for conducting small diameter vascular tissue engineering research. Decellularized aortic allografts were infra-renally implanted in 12 Sprague-Dawley (SD) adult rats. The conduits were harvested at 2 (n = 6) ...

Hematic cyst formation after placement of nonporous alloplastic orbital floor implants is well described. A benefit of porous polyethylene is fibrovascular ingrowth without capsular formation. This ingrowth inhibits hematic cyst formation. In the case presented here, a hematic cyst developed on a screw-fixated porous polyethylene/titanium mesh implant (Medpor Titan B-T-M, ...

Maxillary sinus floor elevation in cases of reduced vertical bone height in the posterior maxilla allows predictable implant placement. The osteotome sinus floor elevation (OSFE) technique has shorter healing and waiting times because the fixture can be placed in the implant recipient site simultaneously with the ridge augmentation. Implant site ...

Dilaceration of the permanent teeth usually occurs because of trauma to their deciduous predecessors. Dilaceration in the crown is rare compared with that in the root and is more common in the maxillary and mandibular incisors. Generally, surgical exposure of the tooth followed by orthodontic traction or extraction of the ...

Significant maxillary anterior osseous defects are considered contraindications for fixed partial dentures. This clinical report discusses the surgical and restorative treatment protocol of a patient who sustained trauma to the premaxilla and was treated by distraction osteogenesis to provide an adequate restorative platform for an implant-retained fixed prosthesis.

Various techniques are described in the literature, either by crestal or lateral approach. Sinus augmentation has a high percentage of success, but presents a number of intraoperative and postoperative complications. The most frequent complication is the Schneiderian membrane perforation with a percentage of perforations between 11% and 56% according to ...

Free vascularized fibular flap is considered the treatment of choice in mandibular reconstruction for extensive bone defects (over 6 centimeters) resulting from trauma, infections or tumor resections. But, when the reconstruction involves a dentate mandible, the fibula has the limit as it does not offer sufficient bone height to restore ...

Objectives: The primary aim of this study was to assess the prevalence of sinus tracts in endodontically treated teeth in an Iranian population. The second aim was to seek and analyze the relationship between the clinically detected sinus tracts and factors such as sex, age, tooth type and location. Study ...

Although supervised night-guard bleaching has proved successful for whitening teeth, both mineral loss and tooth sensitivity are still common problems. The present study introduces a novel remineralizer as well as describes the utilization of a possibly low sensitivity supervised night-guard vital tooth bleaching technique. A 22% carbamide peroxide gel was ...

Aim: To design a surgical template to guide the insertion of craniofacial implants for nasal prosthesis retention. Materials and methods: The planning of the implant position was obtained using software for virtual surgery; the positions were transferred to a free-form computer-aided design modeling software and used to design the surgical ...

Abstract This pilot study assesses the accuracy of two bone-supported stereolithographic surgical templates with respect to placement of implants in originally planned positions, and it tests the precision of dental volumetric tomography planning. Two mandibles retrieved from formalin-fixed human cadavers were scanned by dental volumetric tomography for planning of the ...

To describe the early healing within the void obtained after the elevation of the sinus mucosa and simultaneous implant installation without the use of any grafting material in monkeys. Implants were installed simultaneously with the elevation of the maxillary sinus using the lateral approach in eight monkeys without the use ...

To evaluate whether 7-mm-long implants could be an alternative to longer implants placed in vertically augmented posterior mandibles. Sixty patients with posterior mandibular edentulism with 7-8 mm bone height above the mandibular canal were randomized to either vertical augmentation with anorganic bovine bone blocks and delayed 5-month placement of ≥10 ...

The MVS (such as the Explorer and the MagnaVu) allows the dentist and team to provide quality dentistry in a more comfortable position, for longer periods of time. This is especially important for complex surgical and extensive restorative/aesthetic cases. The procedures that would be enhanced via the MVS include: diagnostic, ...

To review the cochlear implant program in Ramathibodi Hospital and share experience of cochlear implantation emphasized on clinical and surgical outcomes. Retrospective review of 143 ears (140 patients) operated with cochlear implant between 1995 and 2009. The demographic data including etiology of deafness and findings from temporal bone CTscans were ...

A re-pneumatization phenomenon was recorded in sinuses grafted with different materials. The specific aims of this paper were to assess the dental implant survival rate and the behavior of marginal and apical bone remodeling around dental implants placed following sinus augmentation. A retrospective study was conducted on consecutive patients treated ...

Background: Previous studies have shown that simultaneous elevation of the sinus mucosal lining and placement of dental implants without graft materials can be a predictable procedure. Nevertheless, few prospective, controlled, and randomized studies have evaluated this technique. The aim of this prospective, controlled, and randomized clinical study is to evaluate ...

Traditionally, glottic insufficiency because of scar, atrophy, and sulcus has been treated by injection or medialization laryngoplasty. These procedures do not reestablish the vertical height of the vocal fold margin. We propose soft tissue augmentation laryngoplasty with allograft (sheet Alloderm; LifeCell Corporation, Branchburg, NJ) or autograft (temporalis fascia) via a ...

The purpose of the present retrospective investigation was to evaluate the survivability and success of single implants placed simultaneously during direct sinus lifts with allograft forms of bone and to investigate the effect demineralized bone matrix paste has on time management and membrane integrity during these procedures. The charts of ...

Post-surgical graft exposition and loss of grafted bone are a common complication of vertical bone augmentation. Soft tissue expansion (STE) by implantation of osmotic self-filling tissue expanders before reconstructive surgery is an effective method for generation of soft tissue. The aim of this study was to investigate the feasibility of ...

Dome-shaped radiopacities on the floor of the maxillary sinus are commonly interpreted as a sinus cyst on radiographs during dental implant planning. They might present an obstacle in sinus grafting, leading to bone graft failure or implant loss later. The therapeutic approaches to the removal of such cystic lesions and ...

Purpose: The purpose of this study was to histologically and immuno-histochemically evaluate tissue changes in the maxillary sinus after bone screw implantation and maxillary sinus augmentation using self-setting α-tricalcium phosphate (α-TCP; BIOPEX(®) -R) in rabbit. Study design: Adult male Japanese white rabbits (n=15, 12-16 weeks, 2.5-3 kg) were used. The sinus ...

Dental implants have played a part in rehabilitation of the jaws for more than 40 years, but in some cases they alone are inadequate because of extreme alveolar resorption. Correction may necessitate a two-stage procedure with additional interventions. We have made a preliminary study of the use of the Norian ...

Background: The aim of this study was to evaluate the clinical outcomes and radiographic data of transcrestal sinus floor elevation (TSFE) of residual alveolar bone ≤3 mm. Methods: Forty-six patients, edentulous in one or both maxillary posterior segments, were enrolled in this study. The residual alveolar ridge was measured. TSFE without ...

Background: The presence of localized defects and/or small amounts of bone below the maxillary sinus is a common finding, which may compromise implant placement. There is therefore a need for predictable techniques for bone augmentation in such situations. Purpose: The study aims to clinically and histologically evaluate a porcine bone ...

Objectives: This multicenter prospective study was aimed to clinically evaluate implant behavior inserted in severely resorbed maxillae and restored 3 months after sinus grafting. Materials and Methods: In three clinical centers, 67 totally rough wide diameter implants were inserted during 30 consecutive sinus lifts. Computed tomography and panoramic analysis were ...

Immediate implant rehabilitation of edentulous arches may be somewhat problematic because of anatomic situations involving insufficient bone thickness or height and tooth position. The aim of this report was to present a retrospective case series of dental implants placed into augmented sites (split crest or sinus augmentation) that were stabilized ...

Alveolar ridge resorption occurs after tooth extraction and has the potential to either complicate implant placement or impair the final esthetic result. Techniques to preserve natural bone and soft tissue contours are of great interest to clinicians and patients because even subtle postextraction buccal plate resorption may have significant clinical ...

This technical report describes the simple and valuable technique of controlled assisted ridge expansion (CARE) for the esthetic zone of the anterior maxilla. Atrophic bone and narrow alveolar crests make implant bed preparation difficult. The highly predictable surgical technique of CARE for alveolar expansion uses periosteal containment and subperiosteal intrabony ...

This article describes a technique and reports on the early healing for localized sinus augmentation using a crestal approach in combination with an autologous leukocyte- and platelet-rich fibrin (PRF) concentrate. From November 2008 to January 2010, 138 implants were placed in 110 patients using osteotome-mediated sinus floor elevation (OMSFE) with ...

The use of a specially designed implant to be anchored in the zygomatic bone has been proposed in the literature as an alternative to bone grafting in the prosthetic rehabilitation of the severely resorbed maxilla, an option that has few postoperative complications. However, some complications can arise, such as the ...

Achieving an esthetic outcome in tooth replacement and implant treatment requires a proper tooth shape and stable surrounding soft tissue profiles. Bone augmentation is considered vital to support the esthetic soft tissue profile around definitive restorations. To prevent recession of the peri-implant soft tissue in cases with multiple implants, buccal ...

The aim of the present study was to assess the relationship between the maxillary sinus floor and the maxillary posterior teeth root tips using dental cone-beam CT. A total of 87 right and 89 left maxillary sinus regions from 92 patients were examined using dental cone-beam CT. Images were analyzed ...

Bone augmentation with the titanium-mesh (Ti-mesh) technique is susceptible to a large rate of complications such as morbidity of bone graft donor site, and mesh exposure to the oral cavity. The purpose of this study was to evaluate the effectiveness of anorganic bovine bone (ABB) in alveolar bone augmentation with ...

Alveolar ridge defects resulting from tooth loss, trauma, periodontal disease, or congenital lesions often require correction prior to dental implant therapy. Numerous classifications proposed to describe alveolar ridge defects have been limited to describe intra-arch relationships. To provide sufficient jaw-to-jaw alveolar ridge (interarch) relationship information for both restorative and surgical ...

New reconstructive and less invasive methods have been searched to optimize bone formation and osseointegration of dental implants in maxillary sinus augmentation. The aim of the presented ovine split-mouth study was to compare bovine bone mineral (BBM) alone and in combination with mesenchymal stem cells (MSCs) regarding their potential in ...