Il Hwan Lee, Do Hyun Kim, Soo Whan Kim, Jun-Beom Park, Sung Won Kim
Background and objectives: The average rate of chronic sinusitis after maxillary implantation was approximately 5.1%. However, the evidence of predictive risk factors for sinusitis after implantation is lacking. The aim of this study was to perform an anatomic study on the maxillary sinus mucosal thickness (MSMT), the distance between the maxillary sinus ostium and sinus floor (MOD), and the MSMT/MOD ratio as a preoperative risk indicator for sinusitis after maxillary dental implantation. Materials and Methods: Between October 2008 and October 2019, all patients referred to the otolaryngology department were included in this study...
September 14, 2020: Medicina
Young Woo Song, Komoliddin Rafikov, Kyeong-Won Paeng, Myong Ji Kim, Jae-Kook Cha, Daniel S Thoma, Ronald E Jung, Ui-Won Jung
OBJECTIVE: to compare the efficacy of a collagenated synthetic bone substitute (C-SBS) to a particulated synthetic bone substitute (P-SBS) in volume maintenance and new bone formations in a rabbit sinus model. MATERIALS AND METHODS: Either C-SBS or P-SBS was grafted in both sinuses of 16 rabbits. Four (N = 8) or 12 (N = 8) weeks after the surgery, total augmented volume (TAV) and area (TAA), as well as new bone volume (NBV) and area (NBA), were statistically compared by radiographic and histomomertric analyses (p < 0...
September 5, 2020: Journal of Clinical Periodontology
Michael Zaninovich
AIMS: Immediate fixed full-arch implant-supported prosthetic rehabilitation of the severely atrophic maxilla is a challenging treatment modality with favourable patient interest. The delivery of the treatment is challenging due to the difficulty in providing adequate posterior implant positioning with high primary stability in the absence of alveolar bone distal to the maxillary lateral incisors. Current trends in posterior implant placement and immediate loading include the placement of zygomatic implants or distally tilted implants placed anterior to the sinus cavity...
2020: International journal of oral implantology
Panagiotis Dragonas, Theodoros Katsaros, Julie Schiavo, Pablo Galindo-Moreno, Gustavo Avila-Ortiz
PURPOSE: The evidence pertaining to the contribution of the sinus membrane to new bone formation following maxillary sinus augmentation procedures is equivocal. The purpose of this study was to analyse the evidence currently available on the osteogenic capacity of the sinus membrane following maxillary sinus augmentation procedures, and the effect of local delivery of recombinant human bone morphogenic proteins (rhBMPs) on the bone-forming potential of the sinus membrane. MATERIALS AND METHODS: An electronic search was conducted using six different databases to identify controlled trials, prospective and retrospective cohort studies, case series and case reports, as well as preclinical (animal) studies reporting on new bone formation in close proximity with the sinus membrane after maxillary sinus augmentation procedures, assessed through histological and/or histomorphometrical evaluation, on the basis of pre-established eligibility criteria...
2020: International journal of oral implantology
Kyeong-Jun Cheon, Byoung-Eun Yang, Seoung-Won Cho, Sung-Min Chung, Soo-Hwan Byun
The purpose of this study was to devise a classification and lateral window design method based on implants and to evaluate whether these classifications and methods are applicable to clinical practice. When applying the maxillary sinus elevation technique using the lateral window, possible situations were classified into four: (A) two or more sites for implants are required for maxillary sinus augmentation, (B) a single implant is required when there are no adjacent teeth, (C) a single implant is required when one adjacent tooth is present at the mesial or distal area, and (D) a single implant is required when both mesial and distal adjacent teeth are present...
August 31, 2020: International Journal of Environmental Research and Public Health
Emine Adali, Meltem Ozden Yuce, Tayfun Gunbay, Sevtap Gunbay
PURPOSE: Recent studies have shown that the use of platelet concentration products alone, or in combination with variable graft materials, accelerates the new bone formation associated with sinus augmentation. The aim of this study was to measure the adjunctive effects of concentrated growth factor (CGF) used with allograft on new bone formation and augmentation stability in sinus lifting. METHODS: This randomized controlled study included patients who presented for dental implant placement in atrophic posterior maxilla at the Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Ege University, and who needed maxillary sinus augmentation...
August 5, 2020: Journal of Oral and Maxillofacial Surgery
Shilpa S Dandekeri, Chethan Hegde, Pooja Kavassery, M K Sowmya, Bharathraj Shetty
Background: Augmentation of the maxillary sinus increases the lost height of ridge in the posterior maxilla. Bony convolutions from the floor of the sinus called septa may be encountered during the procedure and significantly impact the outcome of the procedure. Materials and Methods: For this retrospective study, 120 cone-beam computed tomography (CBCT) scans were collected from the archives of the department of oral radiology in the time period between January 2016 and August 2018...
January 2020: Annals of Maxillofacial Surgery
Oleksandr Shpachynskyi, Viacheslav Didkovskij, Andrii Kopchak
&lt;b&gt;Background:&lt;/b&gt; Restoration of the masticatory function in patients with edentulous posterior maxilla is often challenging due to the severe atrophy of the alveolar ridges and proximity of the maxillary sinus, resulting in insufficient bone quantity for implant-supported dentures. &lt;br&gt;&lt;b&gt;Aim:&lt;/b&gt; The purpose of this study was to analyze the changes in Schneiderian membrane thickness after lateral sinus floor augmentation (LSFA) using cone beam computed tomography (CBCT)...
June 3, 2020: Otolaryngologia Polska
Pulkit Khandelwal, Vikas Dhupar, Francis Akkara, Neha Hajira
Aims and Objectives: The aim of this prospective clinical study was to evaluate the success of one-stage direct (lateral) sinus lift procedure in severely atrophic posterior maxilla. Materials and Methods: One-stage direct (lateral) sinus lift procedure was carried out at 15 sites in 13 patients. All patients included in the study presented with partially edentulous posterior maxilla with one or more missing teeth and residual bone height less than 5 mm. Three months after surgery, patients were evaluated to access increase in residual bone height, density of new bone formed and implant stability...
May 2020: Indian Journal of Dental Research: Official Publication of Indian Society for Dental Research
Shigeru Sakuma, Mauro Ferri, Hideki Imai, Natalia Fortich Mesa, Daniel José Blanco Victorio, Karol Alí Apaza Alccayhuaman, Daniele Botticelli
BACKGROUND: After sinus floor augmentation, a thickening of the sinus mucosa has been described. The aim of the present study was to evaluate the involvement of the maxillary sinus ostium in the edematous processes after a sinus floor augmentation procedure. METHODS: Seventy-two cone-beam computerized tomographies (CBSTs) were taken before sinus floor augmentation and after 1 week and 9 months from surgery and analyses. Sinus mucosa thickness and area, ostium diameter and patency, and extension of the post-surgical transient mucosal thickening in relation to the ostium were evaluated on the CBCTs for all three periods...
September 30, 2020: International Journal of Implant Dentistry
Roberto Luongo, Nicola Sgaramella, Tonino Traini, Calogero Bugea
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...
July 2020: International Journal of Oral & Maxillofacial Implants
Mustafa Yalçın, Serhat Can, Mert Akbaş, Gühan Dergin, Hasan Garip, Barış Altuğ Aydil, Altan Varol
PURPOSE: The aim of this study was to evaluate 141 zygomatic implants for the reconstruction of severely atrophic maxillae. MATERIALS AND METHODS: In this retrospective case series study, zygomatic implants were placed under general anesthesia. Inclusion criteria were as follows: ASA I or ASA II, age older than 18 years, inadequate bone for restoration with conventional implants, alternative augmentation procedures considered either inappropriate or contraindicated, absence of a medical condition related to implant failure, and providing written consent...
July 2020: International Journal of Oral & Maxillofacial Implants
Katsuhiko Masuda, Erick Ricardo Silva, Karol Al Apaza Alccayhuaman, Daniele Botticelli, Samuel Porfirio Xavier
PURPOSE: To compare the osseointegration at the portion of the implant within the elevated space after sinus elevation using different sizes of xenograft. MATERIALS AND METHODS: Eighteen New Zealand rabbits were selected, antrostomies were prepared bilaterally through the nasal dorsum, and the sinus mucosa was elevated. Deproteinized bovine bone mineral with granules of either 1 to 2 mm (large sites) or 0.250 to 1.0 mm (small sites) were randomly used to fill the elevated space of the two sinuses...
July 2020: International Journal of Oral & Maxillofacial Implants
Tulio Bonna Pignaton, Rubens Spin-Neto, Carlos Eduardo de Almeida Ferreira, Carolina Borges Martinelli, Guilherme José Pimentel Lopes de Oliveira, Elcio Marcantonio
OBJECTIVES: To evaluate graft remodelling according to the distance from the native bone in maxillary sinuses grafted with anorganic bovine bone (ABB). MATERIAL AND METHODS: Bilateral sinus grafting was performed in twenty patients with residual bone height <5 mm before implant placement. After 8 months, biopsy samples were harvested, and histomorphometric analysis was performed to examine bone formation according to the distance (in mm) from the native bone (sinus floor)...
July 27, 2020: Clinical Oral Implants Research
Florian Beck, Karoline Maria Reich, Stefan Lettner, Patrick Heimel, Stefan Tangl, Heinz Redl, Christian Ulm
BACKGROUND: Maxillary sinus floor augmentation (MSFA) is a well-established and predictable augmentation method in severely resorbed maxillae. However, data on the vertical course of bone graft consolidation within the maxillary sinus are rare. The aim of the present study was to quantify the vertical distribution of new bone formation in MSFA and to characterize the vertical gradient of bone graft consolidation. MATERIAL AND METHODS: 85 human sinus biopsies were harvested 6±1 months after MSFA...
July 27, 2020: Journal of Periodontology
Won-Bae Park, Young-Jin Kim, Jung Soo Park, Ji-Young Han, Hyun-Chang Lim
The present study aimed to report: i) the sequela of sinus floor elevation (SFE) in the posterior maxilla with severe sinus membrane thickening and an undiagnosed fungal colonization but a patent ostium; and ii) a treatment course without implant removal. A 73-year-old woman underwent dental implant placement in the left posterior maxillary area. Although the patient was asymptomatic, severe sinus membrane thickening with Haller cells was observed on a radiographic examination, but the ostium was patent. After SFE and simultaneous implant placement, the patient developed acute sinusitis and was referred to an otolaryngologist...
July 14, 2020: Journal of Oral Implantology
Nilesh Salgar
A novel minimally invasive technique, osseodensification, is proposed to facilitate maxillary sinus bone graft augmentation. The Osseodensified Crestal Window overcomes the previous limitations of traditional crestal approaches with respect to residual bone height (RBH) of ≤ 1.5 mm as well as vertical height of augmentation (> 10 mm). Three patients, healthy and non-smoking, with three distinct and difficult clinical situations requiring sinus augmentation and having a maximum of 1.5 mm RBH (0.4 mm - 1...
July 14, 2020: Journal of Oral Implantology
Carolina Mendonça de Almeida Malzoni, Lelis Gustavo Nicoli, Gustavo da Col Dos Santos Pinto, Claudio Marcantonio, Suzana Cristina Pigossi, Vinicius Aparecido Zotesso, Mario Henrique Arruda Verzola, Victor Gonçalves, Elcio Marcantonio, Daniela Leal Zandim-Barcelos
The perforation of the Schneiderian membrane (SM) is a common surgical complication during the sinus floor augmentation procedure (SFA). Different approaches have been proposed to close completely the SM perforation and to avoid graft contamination or migration and postoperative sinus infection. In this context, the leukocyte and platelet-rich fibrin (L-PRF) membranes have been proposed to SM perforation treatment due to its natural adhesive property and resistance. Thus, these case series aim to evaluate the effectiveness of platelet rich fibrin (L-PRF) in the treatment of SM large perforations during SFA...
July 13, 2020: Journal of Oral Implantology
Qiong Li, Tao Yu, Fang Wang, Xin Liu, Zuolin Wang
BACKGROUND: Mesenchymal stem cell (MSC)-based bone tissue engineering is a promising treatment option for maxillary sinus augmentation. Rapid vascularization is necessary to enhance the osteoinductive efficacy and prevent necrosis of the tissue-engineered bone. This study investigated whether the co-autotransplantation of endothelial progenitor cells (EPCs) could significantly enhance the in vivo osteogenic efficacy of MSCs and prevent necrosis of the tissue-engineered bone in a maxillary sinus augmentation model in dogs...
2020: American Journal of Translational Research
Melissa Rachel Fok, George Pelekos, Maurizio S Tonetti
BACKGROUND: The aim of this study was to retrospectively assess bone volumes, healed ridge topography and possibility to plan prosthetically guided implants (PGI) at least 6 months after extraction or exfoliation of first molars as a consequence of terminal periodontitis (EEFMP). MATERIAL AND METHODS: 45 subjects with Stage III-IV periodontitis providing 74 extraction sites (maxillary=51 and mandibular=23) were included. The degree of residual periodontal support on each root was assessed by combining periodontal and radiographic data...
July 11, 2020: Journal of Clinical Periodontology
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