1: Kostopoulos L, Karring T. Guided bone regeneration in mandibular defects in rats using a bioresorbable polymer. Clin Oral Implants Res. 1994 Jun;5(2):66-74. PubMed PMID: 7918911

2: Kostopoulos L, Karring T. Augmentation of the rat mandible using guided tissue regeneration. Clin Oral Implants Res. 1994 Jun;5(2):75-82. PubMed PMID: 7918912.

3: Kostopoulos L, Karring T, Uraguchi R. Formation of jawbone tuberosities by guided tissue regeneration. An experimental study in the rat. Clin Oral Implants Res. 1994 Dec;5(4):245-53. PubMed PMID: 7640339.

4: Schropp L, Wenzel A, Kostopoulos L, Karring T. Bone healing and soft tissue contour changes following single-tooth extraction: a clinical and radiographic 12-month prospective study. Int J Periodontics Restorative Dent. 2003 Aug;23(4):313-23. PubMed PMID: 12956475.

5: Stavropoulos A, Kostopoulos L, Nyengaard JR, Karring T. Deproteinized bovine bone (Bio-Oss) and bioactive glass (Biogran) arrest bone formation when used as an adjunct to guided tissue regeneration (GTR): an experimental study in the rat. J Clin Periodontol. 2003 Jul;30(7):636-43. PubMed PMID: 12834502.

6: Stavropoulos A, Karring ES, Kostopoulos L, Karring T. Deproteinized bovine bone and gentamicin as an adjunct to GTR in the treatment of intrabony defects: a randomized controlled clinical study. J Clin Periodontol. 2003 Jun;30(6):486-95. PubMed PMID: 12795786.

7: Stavropoulos A, Kostopoulos L, Mardas N, Nyengaard JR, Karring T. Gentamicin used as an adjunct to GTR. J Clin Periodontol. 2003 May;30(5):455-62. PubMed PMID: 12716339.

8: Schropp L, Kostopoulos L, Wenzel A. Bone healing following immediate versus delayed placement of titanium implants into extraction sockets: a prospective clinical study. Int J Oral Maxillofac Implants. 2003 Mar-Apr;18(2):189-99. PubMed PMID: 12705296.

9: Mardas N, Kostopoulos L, Stavropoulos A, Karring T. Osteogenesis by guided tissue regeneration and demineralized bone matrix. J Clin Periodontol. 2003 Mar;30(3):176-83. PubMed PMID: 12631174. 

10: Mardas N, Kostopoulos L, Karring T. Bone and suture regeneration in calvarial defects by e-PTFE-membranes and demineralized bone matrix and the impact on calvarial growth: an experimental study in the rat. J Craniofac Surg. 2002 May;13(3):453-62; discussion 462-4. PubMed PMID: 12040218.

11: Donos N, Kostopoulos L, Karring T. Alveolar ridge augmentation using a resorbable copolymer membrane and autogenous bone grafts. An experimental study in the rat. Clin Oral Implants Res. 2002 Apr;13(2):203-13. PubMed PMID: 1952741.

12: Donos N, Kostopoulos L, Karring T. Augmentation of the rat jaw with autogeneic cortico-cancellous bone grafts and guided tissue regeneration. Clin Oral Implants Res. 2002 Apr;13(2):192-202. PubMed PMID: 11952740. 

13: Donos N, Kostopoulos L, Karring T. Alveolar ridge augmentation by combining autogenous mandibular bone grafts and non-resorbable membranes. Clin Oral Implants Res. 2002 Apr;13(2):185-91. PubMed PMID: 11952739.

14: Donos N, Kostopoulos L, Karring T. Augmentation of the mandible with GTR and onlay cortical bone grafting. An experimental study in the rat. Clin Oral Implants Res. 2002 Apr;13(2):175-84. PubMed PMID: 11952738.

15: Stavropoulos A, Kostopoulos L, Mardas N, Nyengaard JR, Karring T. Deproteinized bovine bone used as an adjunct to guided bone augmentation: an experimental study in the rat. Clin Implant Dent Relat Res. 2001;3(3):156-65. PubMed PMID: 11799706.

16: Schropp L, Wenzel A, Kostopoulos L. Impact of conventional tomography on prediction of the appropriate implant size. Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 2001 Oct;92(4):458-63. PubMed PMID: 11598584.

17: Kostopoulos L, Lioubavina N, Karring T, Uraguchi R. Role of chitin beads in the formation of jaw bone by guided tissue regeneration. An experiment in the rat. Clin Oral Implants Res. 2001 Aug;12(4):325-31. English, French, German. PubMed PMID: 11488861.

18: Kostopoulos L, Karring T. Regeneration of the sagittal suture by GTR and its impact on growth of the cranial vault. J Craniofac Surg. 2000 Nov;11(6):553-61. PubMed PMID: 11314496.

19: Lioubavina N, Kostopoulos L, Wenzel A, Karring T. Long-term stability of jaw bone tuberosities formed by "guided tissue regeneration". Clin Oral Implants Res. 1999 Dec;10(6):477-86. PubMed PMID: 10740457.

20: Sindet-Pedersen S, Kragskov J, St√∏dkilde-J√∏rgensen H, Kostopoulos L, Li S, Larsen CG, Gesser B, Jensen SL. Tirilazad inhibits surgically induced edema and interleukin-1 production. An experimental study in rats. Int J Oral Maxillofac Surg. 1998 Oct;27(5):386-90. PubMed PMID: 9804205.

21: Matzen M, Kostopoulos L, Karring T. Healing of osseous submucous cleft palates with guided bone regeneration. Scand J Plast Reconstr Surg Hand Surg. 1996 Sep;30(3):161-7. PubMed PMID: 8885009.

22: Kostopoulos L, Karring T. Role of periosteum in the formation of jaw bone. An experiment in the rat. J Clin Periodontol. 1995 Mar;22(3):247-54. PubMed PMID: 7790532.

23: Urban T, Kostopoulos L, Wenzel A. Immediate implant placement in molar regions: a 12-month prospective, randomized follow-up study. Clin Oral Implants Res. 2012 Dec;23(12):1389-97. doi: 10.1111/j.1600-0501.2011.02319.x. Epub 2011 Nov 25. PubMed PMID: 22117841.

24: Athanasiou M, Baka A, Andreopoulou A, Spala G, Karageorgou K, Kostopoulos L, Patrinos S, Sideroglou T, Triantafyllou E, Mentis A, Malisiovas N, Lytras T, Tsiodras S, Panagiotopoulos T, Bonovas S. Influenza surveillance during the post-pandemic influenza 2010/11 season in Greece, 04 October 2010 to 22 May 2011. Euro Surveill. 2011 Nov 3;16(44). pii: 20004. PubMed PMID: 22085621.

25: Urban T, Kostopoulos L, Wenzel A. Immediate implant placement in molar regions: risk factors for early failure. Clin Oral Implants Res. 2012 Feb;23(2):220-7. doi: 10.1111/j.1600-0501.2011.02167.x. Epub 2011 Apr 4. PubMed PMID: 21457353.

26: Donos N, Graziani F, Mardas N, Kostopoulos L. The use of human hypertrophic chondrocytes-derived extracellular matrix for the treatment of critical-size calvarial defects. Clin Oral Implants Res. 2011 Dec;22(12):1346-53. doi: 10.1111/j.1600-0501.2010.02120.x. Epub 2011 Mar 8. PubMed PMID: 21382090.

27: Stavropoulos A, Karring T, Kostopoulos L. Fully vs. partially rough implants in maxillary sinus floor augmentation: a randomized-controlled clinical trial. Clin Oral Implants Res. 2007 Feb;18(1):95-102. PubMed PMID: 17224029.

28: Donos N, Kostopoulos L, Tonetti M, Karring T, Lang NP. The effect of enamel matrix proteins and deproteinized bovine bone mineral on heterotopic bone formation. Clin Oral Implants Res. 2006 Aug;17(4):434-8. PubMed PMID: 16907775.

29: Schropp L, Isidor F, Kostopoulos L, Wenzel A. Interproximal papilla levels following early versus delayed placement of single-tooth implants: a controlled clinical trial. Int J Oral Maxillofac Implants. 2005 Sep-Oct;20(5):753-61. PubMed PMID: 16274150.

30: Stavropoulos A, Nyengaard JR, Kostopoulos L, Karring T. Implant placement in bone formed beyond the skeletal envelope by means of guided tissue regeneration: an experimental study in the rat. J Clin Periodontol. 2005 Oct;32(10):1108-15. PubMed PMID: 16174276.

31: Schropp L, Kostopoulos L, Wenzel A, Isidor F. Clinical and radiographic performance of delayed-immediate single-tooth implant placement associated with peri-implant bone defects. A 2-year prospective, controlled, randomized follow-up report. J Clin Periodontol. 2005 May;32(5):480-7. PubMed PMID: 15842263.

32: Donos N, Bosshardt D, Lang N, Graziani F, Tonetti M, Karring T, Kostopoulos L. Bone formation by enamel matrix proteins and xenografts: an experimental study in the rat ramus. Clin Oral Implants Res. 2005 Apr;16(2):140-6. PubMed PMID: 15777322.

33: Donos N, Kostopoulos L, Tonetti M, Karring T. Long-term stability of autogenous bone grafts following combined application with guided bone regeneration. Clin Oral Implants Res. 2005 Apr;16(2):133-9. PubMed PMID: 15777321.

34: Schropp L, Isidor F, Kostopoulos L, Wenzel A. Patient experience of, and satisfaction with, delayed-immediate vs. delayed single-tooth implant placement. Clin Oral Implants Res. 2004 Aug;15(4):498-503. PubMed PMID: 15248886.

35: Kostopoulos L, Karring T. Susceptibility of GTR-regenerated periodontal attachment to ligature-induced periodontitis. J Clin Periodontol. 2004 May;31(5):336-40. PubMed PMID: 15086614.

36: Stavropoulos A, Kostopoulos L, Nyengaard JR, Karring T. Fate of bone formed by guided tissue regeneration with or without grafting of Bio-Oss or Biogran. An experimental study in the rat. J Clin Periodontol. 2004 Jan;31(1):30-9. PubMed PMID: 15058372.

37: Mardas N, Kostopoulos L, Stavropoulos A, Karring T. Evaluation of a cell-permeable barrier for guided tissue regeneration combined with demineralized bone matrix. Clin Oral Implants Res. 2003 Dec;14(6):812-8. PubMed PMID: 15015959.

38: Mardas N, Kostopoulos L, Stavropoulos A, Karring T. Denaturation of demineralized bone matrix significantly reduces bone formation by guided tissue regeneration. Clin Oral Implants Res. 2003 Dec;14(6):804-11. PubMed PMID: 15015958.

39: Donos N, Lang NP, Karoussis IK, Bosshardt D, Tonetti M, Kostopoulos L. Effect of GBR in combination with deproteinized bovine bone mineral and/or enamel matrix proteins on the healing of critical-size defects. Clin Oral Implants Res. 2004 Feb;15(1):101-11. PubMed PMID: 14731183.

40: Stavropoulos A, Kostopoulos L, Mardas N, Karring T. Influence of demineralized bone matrix's embryonic origin on bone formation: an experimental study in rats. Clin Implant Dent Relat Res. 2003;5(3):184-92. PubMed PMID: 14575635.