| Adipose-derived and bone marrow mesenchymal stem cells: a donor-matched comparison S Mohamed-Ahmed, I Fristad, SA Lie, S Suliman, K Mustafa, H Vindenes, ... Stem cell research & therapy 9, 1-15, 2018 | 492 | 2018 |
| Periapical changes following root-canal treatment observed 20-27 years postoperatively O Molven, A Halse, I Fristad, D MacDonald-Jankowski International endodontic journal 35 (9), 784-790, 2002 | 221 | 2002 |
| Nonsurgically retreated root filled teeth–radiographic findings after 20–27 years I Fristad, O Molven, A Halse International endodontic journal 37 (1), 12-18, 2004 | 201 | 2004 |
| Nerve fibres and cells immunoreactive to neurochemical markers in developing rat molars and supporting tissues I Fristad, KJ Heyeraas, I Kvinnsland Archives of oral biology 39 (8), 633-646, 1994 | 111 | 1994 |
| Instrument fracture in root canals‐where, why, when and what? A study from a student clinic C Ungerechts, A Bårdsen, I Fristad International endodontic journal 47 (2), 183-190, 2014 | 106 | 2014 |
| Long‐term reliability and observer comparisons in the radiographic diagnosis of periapical disease O Molven, A Halse, I Fristad International Endodontic Journal 35 (2), 142-147, 2002 | 87 | 2002 |
| Mesenchymal stem cells induce endothelial cell quiescence and promote capillary formation TO Pedersen, AL Blois, Y Xue, Z Xing, Y Sun, A Finne-Wistrand, ... Stem cell research & therapy 5, 1-10, 2014 | 86 | 2014 |
| Cytokine signalling in rat pulp interstitial fluid and transcapillary fluid exchange during lipopolysaccharide‐induced acute inflammation A Bletsa, E Berggreen, I Fristad, O Tenstad, H Wiig The Journal of Physiology 573 (1), 225-236, 2006 | 81 | 2006 |
| Incompletely fractured teeth associated with diffuse longstanding orofacial pain: diagnosis and treatment outcome A Brynjulfsen, I Fristad, T Grevstad, I Hals‐Kvinnsland International Endodontic Journal 35 (5), 461-466, 2002 | 78 | 2002 |
| Structure and functions of the dentin-pulp complex K LUUKKO, P KETTUNEN, I FRISTAD, E BERGGREEN Cohen's Pathways of the Pulp, 452-503, 2011 | 75 | 2011 |
| Diagnosing periapical lesions–disagreement and borderline cases. A Halse, O Molven, I Fristad International endodontic journal 35 (8), 2002 | 75 | 2002 |
| NK1, NK2, NK3 and CGRP1 receptors identified in rat oral soft tissues, and in bone and dental hard tissue cells I Fristad, V Vandevska-Radunovic, K Fjeld, SJ Wimalawansa, ... Cell and tissue research 311, 383-391, 2003 | 73 | 2003 |
| Dens invaginatus and treatment options based on a classification system: report of a type II invagination Ø Kristoffersen, OH Nag, I Fristad International Endodontic Journal 41 (8), 702-709, 2008 | 65 | 2008 |
| Conditioned media from hypoxic‐cultured human dental pulp cells promotes bone healing during distraction osteogenesis M Fujio, Z Xing, N Sharabi, Y Xue, A Yamamoto, H Hibi, M Ueda, I Fristad, ... Journal of tissue engineering and regenerative medicine 11 (7), 2116-2126, 2017 | 60 | 2017 |
| Sympathectomy causes increased root resorption after orthodontic tooth movement in rats: immunohistochemical study SR Haug, P Brudvik, I Fristad, KJ Heyeraas Cell and tissue research 313, 167-175, 2003 | 58 | 2003 |
| Recruitment of immunocompetent cells after dentinal injuries in innervated and denervated young rat molars: an immunohistochemical study. I Fristad, KJ Heyeraas, IH Kvinnsland, R Jonsson Journal of Histochemistry & Cytochemistry 43 (9), 871-879, 1995 | 56 | 1995 |
| Endothelial microvascular networks affect gene-expression profiles and osteogenic potential of tissue-engineered constructs TO Pedersen, AL Blois, Z Xing, Y Xue, Y Sun, A Finne-Wistrand, ... Stem cell research & therapy 4, 1-10, 2013 | 52 | 2013 |
| Dental innervation: functions and plasticity after peripheral injury I Fristad Acta Odontologica Scandinavica 55 (4), 236-254, 1997 | 52 | 1997 |
| Comparison of bone regenerative capacity of donor-matched human adipose–derived and bone marrow mesenchymal stem cells S Mohamed-Ahmed, MA Yassin, A Rashad, H Espedal, SB Idris, ... Cell and Tissue Research 383, 1061-1075, 2021 | 49 | 2021 |
| Experimental orthodontic tooth movement and extensive root resorption: periodontal and pulpal changes P Tripuwabhrut, P Brudvik, I Fristad, S Rethnam European Journal of Oral Sciences 118 (6), 596-603, 2010 | 49 | 2010 |