periodontologyПародонтологияParodontologiya1683-37591726-7269Russian Periodontal Association (RPA)10.33925/1683-3759-2020-25-4-317-321periodontology-366Research ArticleИССЛЕДОВАНИЕRESEARCHRoot cementum ultrastructure in healthy and periodontally diseased teethRoot cementum ultrastructure in healthy and periodontally diseased teethhttps://orcid.org/0000-0002-4527-7471SlazhnevaЕ. S.SlazhnevaE. S.

Slazhneva, Ekaterina S., post-graduate student of the Department of Periodontology

Moscow 

Slazhneva, Ekaterina S., post-graduate student of the Department of Periodontology

Moscow

katushkor@mail.ruhttps://orcid.org/0000-0002-4439-9661TikhomirovaЕ. А.TikhomirovaE. A.

Tikhomirova, Ekaterina A., post-graduate student of the Department of Periodontology

Moscow 

Tikhomirova, Ekaterina A., post-graduate student of the Department of Periodontology

Moscow

lukaly1990@mail.ruhttps://orcid.org/0000-0002-9589-0514ElizovaL. А.ElizovaL. A.

Elizova, Larisa A., PhD, Assistant Professor of the Department of Periodontology

Moscow 

Elizova, Larisa A., PhD, Assistant Professor of the Department of Periodontology

Moscow

algur@bk.ruhttps://orcid.org/0000-0003-1094-7209LobodaЕ. S.LobodaE. S.

Loboda, Ekaterina S., PhD, Associate Professor of the Department of Restorative Dentistry and Periodontology

Saint Petersburg

Loboda, Ekaterina S., PhD, Associate Professor of the Department of Restorative Dentistry and Periodontology

Saint Petersburg

ekaterina.loboda@gmail.comhttps://orcid.org/0000-0002-8026-0800OrekhovaL. Yu.OrekhovaL. Yu.

Orekhova, Liudmila Yu., PhD, MD, DSc, Professor, Head of the Department of Restorative Dentistry and Periodontology

Saint Petersburg

Orekhova, Liudmila Yu., PhD, MD, DSc, Professor, Head of the Department of Restorative Dentistry and Periodontology

Saint Petersburg

prof_orekhova@mail.ruhttps://orcid.org/0000-0002-4141-1370AtrushkevichV. G.AtrushkevichV. G.

Atrushkevich, Victoria G., PhD, MD, DSc, Professor of the Department of Periodontology

Moscow

Atrushkevich, Victoria G., PhD, MD, DSc, Professor of the Department of Periodontology

Moscow

atrushkevichv@mail.ruEvdokimov Moscow State University of Medicine and DentistryРоссияEvdokimov Moscow State University of Medicine and DentistryRussian FederationPavlov First Saint Petersburg State Medical UniversityРоссияPavlov First Saint Petersburg State Medical UniversityRussian Federation202018122020254317321Copyright © Slazhneva Е.S., Tikhomirova Е.А., Elizova L.А., Loboda Е.S., Orekhova L.Y., Atrushkevich V.G., 20202020Slazhneva Е.S., Tikhomirova Е.А., Elizova L.А., Loboda Е.S., Orekhova L.Y., Atrushkevich V.G.Slazhneva E.S., Tikhomirova E.A., Elizova L.A., Loboda E.S., Orekhova L.Y., Atrushkevich V.G.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://www.parodont.ru/jour/article/view/366Relevance

Relevance. Investigation of the root cementum ultrastructure in chronic generalized periodontitis is still relevant as changes in structure and composition of root cementum play a significant role in successful periodontal regeneration. Am is to study changes in the root cementum ultrastructure in patients with chronic generalized periodontitis.

Materials and methods

Materials and methods. Scanning electron microscopy (SEM) was used to study the cementum surface of 9 teeth extracted due to severe chronic generalized periodontitis and 3 teeth with a clinically healthy periodontium extracted for orthodontic reasons. 3D visualization of the received SEM images was performed.

Results

Results. The cementum of periodontally healthy teeth appeared homogeneous and regular,was covered in periodontal fibers and had a pebble-like or dome-shaped surface. In chronic periodontitis patients, the cementum surface was mostly irregular with multiple defects of various depth, areas of completely destroyed cementum, exposed dentinal tubules and a complete absence of periodontal fibers.

Conclusion

Conclusion. Loss of periodontal attachment and root cementum exposure to microbial biofilm may result in irreversible structural changes of the surface which may affect the regeneration of clinical attachment.

Relevance

Relevance. Investigation of the root cementum ultrastructure in chronic generalized periodontitis is still relevant as changes in structure and composition of root cementum play a significant role in successful periodontal regeneration. Am is to study changes in the root cementum ultrastructure in patients with chronic generalized periodontitis.

Materials and methods

Materials and methods. Scanning electron microscopy (SEM) was used to study the cementum surface of 9 teeth extracted due to severe chronic generalized periodontitis and 3 teeth with a clinically healthy periodontium extracted for orthodontic reasons. 3D visualization of the received SEM images was performed.

Results

Results. The cementum of periodontally healthy teeth appeared homogeneous and regular,was covered in periodontal fibers and had a pebble-like or dome-shaped surface. In chronic periodontitis patients, the cementum surface was mostly irregular with multiple defects of various depth, areas of completely destroyed cementum, exposed dentinal tubules and a complete absence of periodontal fibers.

Conclusion

Conclusion. Loss of periodontal attachment and root cementum exposure to microbial biofilm may result in irreversible structural changes of the surface which may affect the regeneration of clinical attachment.

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The authors declare that there are no conflicts of interest present.