THE BEHAVIOR OF CAVITY BASES IN INTERNAL BLEACHING TECHNIQUES: A SYSTEMATIC REVIEW
Creators: name: Hernando, Angela Naya
Publisher: name: OSF Registries
Year: 2024
Subjects: subject: Dental Materials
subject: Medicine and Health Sciences
subject: Endodontics and Endodontology
subject: Dentistry
subject: FOS: Clinical medicine

description: This Systematic Review is the final work of the Master in Dental Sciences at the University of Valencia (Spain). We would like to be able to publish the Systematic Review and for this reason we want to have its record.
A Literature Review is being conducted to discover which cavity base is best for preventing microleakage during internal teeth bleaching.
To carry out the Systematic Review, the following bibliographic search was carried out:
Pubmed:
("Nonvital tooth"[MeSH Terms] OR "Nonvital tooth"[Title/Abstract] OR "Desvitalized Teeth"[Title/Abstract] OR "Nonvital teeth"[Title/Abstract] OR "Endodontically Treated teeth"[Title/Abstract] OR "Endodontically Treated Tooth”[Title/Abstract]) AND ("Tooth bleaching"[MeSH Terms] OR Opalescence[MeSH Terms] OR "Tooth bleaching"[Title/Abstract] OR Opalescence[Title/Abstract] OR "Intracoronal bleaching"[Title/Abstract] OR "Nonvital bleaching”[Title/Abstract] AND ("intraorifice barrier"[Title/Abstract] OR "Intra-orifice barrier"[Title/Abstract] OR "Intracoronal barrier"[Title/Abstract] "glass ionomer cements"[MeSH Terms] OR "glass ionomer cements"[Title/Abstract] OR "cavity base"[Title/Abstract] OR MTA[Title/Abstract] OR barrier[Title/Abstract])

Web of Science 
(TS=(("Nonvital tooth" OR "Desvitalized Teeth" OR "Nonvital teeth" OR "Endodontically Treated teeth" OR "Endodontically Treated Tooth") )) AND TS=(("Tooth bleaching" OR Opalescence OR "intracoronal bleaching" OR "Nonvital bleaching")) AND TS=(("intraorifice barrier" OR "Intra-orifice barrier" OR "Intracoronal barrier” OR "glass ionomer cements” OR MTA OR barrier))

Embase 
('nonvital tooth’:ti,ab,kw OR 'desvitalized teeth':ti,ab,kw OR 'nonvital teeth':ti,ab,kw OR 'endodontically treated teeth':ti,ab,kw OR 'endodontically treated tooth':ti,ab,kw) AND ('tooth bleaching':ti,ab,kw OR opalescence:ti,ab,kw OR 'intracoronal bleaching':ti,ab,kw OR 'nonvital bleaching’:ti,ab,kw) AND ('intraorifice barrier':ti,ab,kw OR 'intra-orifice barrier':ti,ab,kw OR 'intracoronal barrier’:ti,ab,kw OR ‘glass ionomer cements’:ti,ab,kw OR MTA:ti,ab,kw OR barrier:ti,ab,kw)

Scopus
( TITLE-ABS-KEY ( "Nonvital tooth" OR "Desvitalized Teeth" OR "Nonvital teeth" OR "Endodontically Treated teeth" OR "Endodontically Treated Tooth" ) AND TITLE-ABS-KEY ( "Tooth bleaching" OR opalescence OR "intracoronal bleaching" OR "Nonvital bleaching") AND TITLE-ABS-KEY ( "intraorifice barrier" OR "Intra-orifice barrier" OR "Intracoronal barrier” OR “glass ionomer cements” OR MTA OR barrier ) ) 
We found a total of 78 articles, of which we kept 15 applying the following inclusion and exclusion criteria:
Inclusion criteria:
In vitro and ex vivo studies
Studies that analyze teeth with internal non-vital teeth whitening
Studies that evaluate microfiltration

Exclusion criteria:
Articles that have been published for more than 20 years
Studies carried out with young permanent teeth
Studies carried out with animal teeth
Studies performed with temporary filling material

Our PICO question is:
P (population): Permanent teeth with previous endodontic treatment
I (intervention): internal tooth whitening on the tooth with the cavity base
C (comparison): of the different cavity bases with each other
O (outcome/results): microfiltration

The main objective of this review is to evaluate the microleakage produced at the root sealing level of different cavity bases after having placed the whitening agent inside the crown of the tooth in bleaching of non-vital teeth.