Blar i Bergen Open Research Archive på forfatter "Pedersen, Torbjørn Østvik"
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Ameloblastic carcinoma of the mandible: A case report and literature review
Brukas, Mindaugas; Pedersen, Torbjørn Østvik; Lybak, Stein; Skarstein, Kathrine; Løes, Sigbjørn Suk (Journal article; Peer reviewed, 2020)Ameloblastic carcinoma is a rare malignant odontogenic tumor. Here we present a case of malignant transformation of ameloblastoma into ameloblastic carcinoma over a period of eight years. A cystic lesion in the left mandible ... -
Angiogenic and Immunomodulatory Properties of Endothelial and Mesenchymal Stem Cells
Bartaula-Brevik, Sushma; Pedersen, Torbjørn Østvik; Finne-Wistrand, Anna; Bolstad, Anne Isine; Mustafa, Kamal Babikeir Eln (Peer reviewed; Journal article, 2016-02)It has been suggested that the effect of implanted cells on the local environment is important when selecting the appropriate cell type for tissue regeneration. Our aim was to compare the local tissue response to implanted ... -
Antibiotic prophylaxis for mandibular advancement with bilateral sagittal split osteotomy: a comparison of three versus four doses penicillin V
Pedersen, Torbjørn Østvik; Haaberg, Vivian; Løes, Sigbjørn Suk (Journal article; Peer reviewed, 2021)Aim Compare two regimens of antibiotic prophylaxis on the development of surgical site infection (SSI) following mandibular advancement with bilateral sagittal split osteotomy (BSSO). Materials and methods In total, ... -
Cell seeding density is a critical determinant for copolymer scaffolds-induced bone regeneration
Yassin, Mohammed Ahmed; Leknes, Knut N.; Pedersen, Torbjørn Østvik; Xing, Zhe; Sun, Yang; Lie, Stein Atle; Finne-Wistrand, Anna; Mustafa, Kamal Babikeir Eln (Peer reviewed; Journal article, 2015-11)Constructs intended for bone tissue engineering (TE) are influenced by the initial cell seeding density. Therefore, the objective of this study was to determine the effect of bone marrow stromal stem cells (BMSCs) density ... -
The effect of resolvin D1 on bone regeneration in a rat calvarial defect model
Jiang, Xiaofeng; Liu, Jing; Li, Si; Qiu, Yingfei; Wang, Xiaoli; He, Xiaoli; Pedersen, Torbjørn Østvik; Mustafa, Kamal Babikeir Elnour; Xue, Ying; Mustafa, Manal; Kantarci, Alpdogan; Xing, Zhe (Journal article; Peer reviewed, 2022)Resolvin D1 (RvD1) is a pro-resolving lipid mediator of inflammation, endogenously synthesized from omega-3 docosahexaenoic acid. The purpose of this study was to investigate the effect of RvD1 on bone regeneration using ... -
Endothelial microvascular networks affect gene-expression profiles and osteogenic potential of tissue-engineered constructs
Pedersen, Torbjørn Østvik; Blois, Anna L; Xing, Zhe; Xue, Ying; Sun, Yang; Finne-Wistrand, Anna; Akslen, Lars A.; Lorens, James B.; Leknes, Knut N.; Fristad, Inge; Mustafa, Kamal Babikeir Eln (Peer reviewed; Journal article, 2013-05-17)Introduction: A major determinant of the potential size of cell/scaffold constructs in tissue engineering is vascularization. The aims of this study were twofold: first to determine the in vitro angiogenic and osteogenic ... -
Hjørnetenner på avveie – kliniske og radiologiske vurderinger
Papadakou, Panagiota; Jonsson, Malin Viktoria; Pedersen, Torbjørn Østvik (Journal article; Peer reviewed, 2023)Ektopisk frembrudd av permanente hjørnetenner er ett av de vanligere avvikene i tannvekslingen. Hjørnetenner som ikke er klinisk synlig eller kan palperes når pasienten har en tannalder tilsvarende 10 år, bør undersøkes ... -
Hormone spiral in treatment of progesterone-induced stomatitis
Sandbakk, Frank-Jakob; Løes, Sigbjørn Suk; Pedersen, Torbjørn Østvik (Journal article; Peer reviewed, 2020)Hormonal changes in the menstrual cycle may cause autoimmune progesterone-induced stomatitis. This case illustrates that insertion of a hormone spiral can be a treatment option to reduce mucosal lesions and symptoms. -
In vivo host response and degradation of copolymer scaffolds functionalized with nanodiamonds and bone morphogenetic protein 2
Suliman, Salwa; Sun, Yang; Pedersen, Torbjørn Østvik; Xue, Ying; Nickel, Joachim; Waag, Thilo; Finne-Wistrand, Anna; Steinmüller-Nethl, Doris; Krueger, Anke; Costea, Daniela Elena; Mustafa, Kamal Babikeir Eln (Peer reviewed; Journal article, 2016-03)The aim is to evaluate the effect of modifying poly[(l-lactide)-co-(ε-caprolactone)] scaffolds (PLCL) with nanodiamonds (nDP) or with nDP+physisorbed BMP-2 (nDP+BMP-2) on in vivo host tissue response and degradation. The ... -
Instar growth and Development of Lepeophtheirus salmonis Copepodids.
Pedersen, Torbjørn Østvik (Master thesis, 2009-05-07)Salmon louse Lepeophtheirus salmonis, (Krøyer, 1837) is a caligid parasite, responsible for major economical loss and welfare issues in Norwegian marine culture of salmonid species. Infections are mainly controlled with ... -
Komplikasjoner etter kjevebrudd behandlet ved Haukeland universitetssjukehus 2015–2020
Kolberg, Hilde Mei; Antonipillai, Infanta; Løes, Sigbjørn; Pedersen, Torbjørn Østvik (Journal article; Peer reviewed, 2022)Kjevebrudd er en relativt vanlig skade særlig etter voldshendelser og fall. De fleste kjevebrudd krever operativ behandling. Denne studien belyser forekomsten av komplikasjoner etter behandling av kjevebrudd ved Haukeland ... -
Mesenchymal stem cells induce endothelial cell quiescence and promote capillary formation
Pedersen, Torbjørn Østvik; Blois, Anna L; Xue, Ying; Xing, Zhe; Sun, Yang; Finne-Wistrand, Anna; Lorens, James B.; Fristad, Inge; Leknes, Knut N.; Mustafa, Kamal Babikeir Eln (Peer reviewed; Journal article, 2014-02-17)Introduction: Rapid establishment of functional blood vessels is a prerequisite for successful tissue engineering. During vascular development, endothelial cells (ECs) and perivascular cells assemble into a complex regulating ... -
Multiple brain abscesses and ventriculitis secondary to chronic periodontitis
Pedersen, Torbjørn Østvik; Kråkenes, Jostein; Løes, Sigbjørn Suk (Journal article; Peer reviewed, 2020)Chronic marginal periodontitis is a common oral disease, but can in rare cases cause severe intracranial infection. This case illustrates that poor dental status can be life threatening, in particular for immunocompromised ... -
Release and bioactivity of bone morphogenetic protein-2 are affected by scaffold binding techniques in vitro and in vivo
Suliman, Salwa; Xing, Zhe; Wu, X; Xue, Ying; Pedersen, Torbjørn Østvik; Sun, Y; Døskeland, Anne Marie Simonne; Nickel, Joachim; Waag, Thilo; Lygre, Henning; Finne Wistrand, Anna; Steinmüller-Nethl, Doris; Krueger, Anke; Mustafa, Kamal Babikeir Eln (Peer reviewed; Journal article, 2015-01-10)A low dose of 1 μg rhBMP-2 was immobilised by four different functionalising techniques on recently developed poly(l-lactide)-co-(ε-caprolactone) [(poly(LLA-co-CL)] scaffolds. It was either (i) physisorbed on unmodified ... -
Surgical vs conservative treatment of medication-related osteonecrosis of the jaw—A complex systematic review and meta-analysis
Lobekk, Ole Kristian; Dijkstra, Ward Jaap; Pedersen, Torbjørn Østvik (Journal article; Peer reviewed, 2021)Objective The objective of this study was to compare the outcome of surgical and conservative treatment approaches for medication-related osteonecrosis of the jaw. Study Design Publications in Medline, The Cochrane ... -
Temporomandibular joint prosthesis in cancer reconstruction preceding radiation therapy
Pedersen, Torbjørn Østvik; Lybak, Stein; Lund, Bodil Kristina; Løes, Sigbjørn Suk (Journal article; Peer reviewed, 2021)Total joint prostheses are a viable treatment option after removal of malignancies invading the temporomandibular joint, even when adjuvant radiation therapy is required. -
Tooth extraction prior to radiotherapy for oropharyngeal cancer increases the risk of osteoradionecrosis
Slettvoll, Sigve; Thaning, Rasmus Christofer; Pedersen, Torbjørn Østvik (Journal article; Peer reviewed, 2023)Purpose: Osteoradionecrosis of the jaw is a therapy-resistant condition that may occur after treatment for head and neck cancer. The aim of this study was to investigate the incidence of osteoradionecrosis in patients with ...