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Pihlstrom, Bruce L; Hodges, James S; Michalowicz, Bryan S.; Wohlfahrt, Johan Caspar & Garcia, Raul I
(2018).
Authors' response.
The Journal of the American Dental Association (1939).
ISSN 0002-8177.
149(9),
p. 751–752.
doi:
10.1016/j.adaj.2018.07.010.
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Villa , Oscar; Wohlfahrt, Johan Caspar; Mdala, Ibrahimu; Petzold, Christiane; Reseland, Janne Elin & Snead, Malcolm L.
[Show all 7 contributors for this article]
(2015).
Proline-rich peptides accelerate oral mucosal wound healing.
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Wohlfahrt, Johan Caspar & Koldsland, Odd Carsten
(2014).
Peri-implantologi; hva vet vi, hva gjør vi og hva prøver vi å finne ut av.
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Wohlfahrt, Johan Caspar & Klepp, Morten
(2014).
Periodonti og peri-implantologi fra et vitenskapelig og klinisk ståsted.
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Wohlfahrt, Johan Caspar & Koldsland, Odd Carsten
(2014).
Pasienten har fått sitt implantat-hva nå?
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Wohlfahrt, Johan Caspar & Koldsland, Odd Carsten
(2014).
Peri-Implantit -Vad vet vi, vad gör vi, vad forskar vi på?
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Wohlfahrt, Johan Caspar
(2014).
The patient with the hopeless tooth versus the patient with peri-implantitis - What road do we want to go now?
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Wohlfahrt, Johan Caspar
(2014).
Diagnosis and treatment of peri-implant disease.
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Wohlfahrt, Johan Caspar; Lyngstadaas, Ståle Petter; Aass, Anne Merete & Koldsland, Odd Carsten
(2014).
Implant Maintenance with a Chitosan Brush –A Randomized Clinical Trial.
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Skjerven, Henrik; Herlofson, Bente Brokstad; Wohlfahrt, Johan Caspar; Rønold, Hans Jacob & Ellingsen, Jan Eirik
(2014).
Evaluation of the Precision of implant placement using stereolithographic guides.
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Villa , Oscar; Lyngstadaas, Ståle Petter; Monjo, Marta; Rønold, Hans Jacob; Petzold, Christiane & Wohlfahrt, Johan Caspar
(2013).
The influence of suture remnants on peri-implant bone healing - A pilot animal experimental study.
Show summary
Background: Suture remnants may potentially induce an inflammation and influence peri-implant osseous healing. It might thus be preferable to use a resorbable suture material in order to avoid soft and hard tissue complications.
Aim: To evaluate the influence of remnants of suture filaments on osseointegration in a rabbit tibial model.
Material and methods: In this pilot animal experimental study calibrated defects were prepared in the tibia of 5 chinchilla rabbits. Four sites were prepared in each animal and randomized to one of the three groups. Test filaments of nylon and chitosan were placed at the prepared implant sites before implant placement. A sham site was used as control. A coin-shaped machined titanium implant covered with a teflon cap and a preshaped maxillofacial bone plate were seated over the prepared cortical bone. After a healing period of 4 weeks, rabbits were euthanized and the tibial bone with the implants was exposed and removed. The implants were subjected to a pull-out test procedure. Wound fluid was collected with filter papers for the analyses of lactate dehydrogenase activity, alkaline phosphatase activity and total protein. Total-RNA was isolated from the peri-implant bone tissue. Real time PCR was performed for the following target genes: vacuolar type proton ATPase, insulin like growth factor-1, bone morphogenetic protein-2 , collagen-1, interleukin-10, interleukin-6, osteocalcin, calcitonin receptor, tartrate-resistant acid phosphatase and tumor necrosis factor-α. A one-way analysis of variance was used to detect differences across groups with the significance level set at 0.05.
Results: When comparing the data across the three groups no statistically significant differences were found. There was, however, a trend towards a reduced pull-out force for the nylon group (Nylon: 23.0 ± 12.8; Chitosan: 33.9 ± 11.3; Sham 33.6 ± 24.0). Similarly, the resorption bone marker vacuolar type proton ATPase was increased in the nylon group compared to the sham and chitosan groups. The chitosan group showed lower ALP activity and lower expression of osteocalcin compared to the nylon group.
Conclusions and clinical implications: In this closed surgical model, peri-implant bone healing was only marginally affected by the different materials tested. There was, however, a tendency toward better osseointegration and less expression of bone resorption markers in the sham and chitosan groups as compared to the nylon group. The number of animals was low in this pilot study and further research is warranted to explore this issue.
The influence of suture remnants on peri-implant bone healing - A pilot animal experimental study.
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Tiainen, Hanna; Wiedmer, David; Wohlfahrt, Johan Caspar; Lyngstadaas, Ståle Petter & Haugen, Håvard Jostein
(2013).
Highly porous ceramic TiO2 scaffolds for bone repair.
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Tiainen, Hanna; Wiedmer, David; Wohlfahrt, Johan Caspar; Lyngstadaas, Ståle Petter & Haugen, Håvard Jostein
(2013).
Highly porous ceramic titanium dioxide scaffolds for bone repair.
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Wohlfahrt, Johan Caspar; Aass, Anne Merete; Grandfeldt, F.; Lyngstadaas, Ståle Petter & Reseland, Janne Elin
(2012).
Change in bone resorption markers in pen-implant sulcus fluid after surgical treatment of peri-implantitis.
Bone.
ISSN 8756-3282.
50,
p. S116–S116.
doi:
10.1016/j.bone.2012.02.358.
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Tiainen, Hanna; Wohlfahrt, Johan Caspar; Verket, Anders; Lyngstadaas, Ståle Petter & Haugen, Håvard Jostein
(2012).
Bone formation in TiO2 bone scaffolds in extraction sockets of minipigs.
Bone.
ISSN 8756-3282.
50,
p. S115–S115.
doi:
10.1016/j.bone.2012.02.354.
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Tiainen, Hanna; Wohlfahrt, Johan Caspar; Verket, Anders; Lyngstadaas, Ståle Petter & Haugen, Håvard Jostein
(2012).
Highly porous TiO2 scaffolds for bone repair.
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Haugen, Håvard Jostein; Monjo Cabrer, Marta; Lyngstadaas, Ståle Petter & Wohlfahrt, Johan Caspar
(2012).
Ultra-Porous Ceramic Titanium Dioxide Bone grafts Promote Bone Healing in Rabbit Peri-Implant Cortical Defect Model.
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Tiainen, Hanna; Wohlfahrt, Johan Caspar; Verket, Anders; Lyngstadaas, Ståle Petter & Haugen, Håvard Jostein
(2012).
Highly porous TiO2 scaffolds show excellent bone ingrowth in vivo.
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Tiainen, Hanna; Wohlfahrt, Johan Caspar; Verket, Anders; Lyngstadaas, Ståle Petter & Haugen, Håvard Jostein
(2012).
Bone formation in TiO2 bone scaffolds in extraction sockets of minipigs.
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Verket, Anders; Lyngstadaas, Ståle Petter; Rasmusson, Lars & Wohlfahrt, Johan Caspar
(2012).
Sinus Augmentation with Porous Titanium Granules- MicroCT and Histological Analysis.
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Verket, Anders; Lyngstadaas, Ståle Petter & Wohlfahrt, Johan Caspar
(2011).
Augmentation of the Maxillary Sinus Floor Using Porous Titanium Granules.
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Tiainen, Hanna; Wohlfahrt, Johan Caspar; Verket, Anders; Lyngstadaas, Ståle Petter & Haugen, Håvard Jostein
(2011).
Assessment of bone ingrowth into porous TiO2 bone scaffold.
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Tiainen, Hanna; Wohlfahrt, Johan Caspar; Verket, Anders; Ellingsen, Jan Eirik; Lyngstadaas, Ståle Petter & Haugen, Håvard Jostein
(2011).
Ultra-porous titanium dioxide scaffolds for bone repair.
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Verket, Anders; Lyngstadaas, Ståle Petter; Rønold, Hans Jacob & Wohlfahrt, Johan Caspar
(2011).
Implants inserted in Extraction Sockets Grafted with Porous Titanium Granules.
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Schneider, Sigurd; Henderson, Elisabet; Wohlfahrt, Johan Caspar; Taxt-Lamolle, Sebastien Francis Michel; Gustumhaugen, Eva & Petersen, Fernanda Cristina
[Show all 9 contributors for this article]
(2011).
A nano chemical debridement solution shows high efficiency on contaminated titanium surface.
European Cells and Materials.
ISSN 1473-2262.
21.
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Wohlfahrt, Johan Caspar; Aass, Anne Merete; Rønold, Hans Jacob; Karlsson, Stig; Ellingsen, Jan Eirik & Saxegaard, Erik
(2010).
Porous titanium granules in the surgical treatment of peri-implant osseous defects - a randomized clinical trial.
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Wohlfahrt, Johan Caspar; Rønold, Hans Jacob; Heijl, L; Haugen, Håvard Jostein; Aass, Anne Merete & Lyngstadaas, Ståle Petter
(2010).
Porous titanium granules in degree II furcation defects - an animal experimental study.
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Wohlfahrt, Johan Caspar; Rønold, Hans Jacob; Aass, Anne Merete; Heijl, Lars & Lyngstadaas, Ståle Petter
(2009).
Porous titanium granules in degree II furcation defects- an animal experimental study.
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Wohlfahrt, Johan Caspar; Aass, Anne Merete; Rønold, Hans Jacob; Karlsson, Stig; Ellingsen, Jan Eirik & Saxegaard, Erik
[Show all 7 contributors for this article]
(2009).
Porous Titanium Granules in the Surgical Treatment of Peri-Implant Osseous Defects – A Randomized Clinical Study.
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Wohlfahrt, Johan Caspar
(2009).
Kirurgisk behandling av peri-implantat bein defekter- forsking ved Universitetet i Oslo.
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Wohlfahrt, Johan Caspar
(2009).
Regenerasjons behandling med porøse titan granula.
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Wohlfahrt, Johan Caspar; Aass, Anne Merete; Rønold, Hans Jacob & Lyngstadaas, Ståle Petter
(2008).
Titanium Granules for Treatment of Periimplantitis Osseous Defects - A Pilot Randomized Clinical Study with Human Histology.
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Wohlfahrt, Johan Caspar; Rønold, Hans Jacob; Aass, Anne Merete; Monjo, Marta & Lyngstadaas, Ståle Petter
(2008).
Porous Titanium Granules in Rabbit Tibia Critical Size Osseous Defects.
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Wohlfahrt, Johan Caspar
(2008).
Surgical treatment of peri-implant osseous defects-Ongoing studies at the University of Oslo.
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Wohlfahrt, Johan Caspar
(2008).
Peri-Implantit.
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Wohlfahrt, Johan Caspar; Reseland, Janne Elin & Lyngstadaas, Ståle Petter
(2007).
Vevsregenerasjon med amelogenin-klinisk erfaring of fremtidsperspektiver.
Odontologi.
ISSN 0105-0141.
p. 113–126.
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Samuelsson, Roy; Haanæs, Hans R & Wohlfahrt, Johan Caspar
(2007).
Når beinforholdene er inadekvate ved implantatbehandling.
NDD-oppriktig dentalt.
p. 16–19.
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Wohlfahrt, Johan Caspar
(2007).
Peri-Implantitt-Titangranulat for benregenerasjon.
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Wohlfahrt, Johan Caspar
(2007).
Peri-implantitis- Does it really exist?
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Wohlfahrt, Johan Caspar
(2007).
Contemporary Periodontology and Peri-implantology-Overview in brief and own research at the University of Oslo.
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Wohlfahrt, Johan Caspar
(2012).
On the use of titanium based materials as non-resorbable bone substitutes.
Unipub forlag.
ISSN 978-82.91757-77-3.