Evaluation of temperature change during antimicrobial photodynamic therapy with two different photosensitizers in dental caries

Mirzaie, Mansoreh; Yassini, Esmael; Ashnagar, Sajjad; Hadadi, Azadeh; Chiniforush, Nasim

doi:10.1016/j.pdpdt.2016.03.005

Cited by 9 publications

(5 citation statements)

References 15 publications

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“…According to Nammour et al, aPDT using phenothiazine chloride as a PS and diode laser (660 nm, 40 mW output) irradiation for 30 s resulted in an average temperature increase in the pulp cavity of 0.83 • C ± 0.22 • C [21]. Mirzaie et al reported that aPDT using indocyanine green (ICG) as a PS and diode laser (810 nm, 200 mW output) irradiation for 30 s resulted in an average pulp cavity temperature rise of 1.67 • C ± 0.14 • C, and 0.5 W and 1 W diode laser irradiations for 30 s without a PS resulted in an average pulp cavity temperature increase of 4.2 • C and 4.5 • C, respectively [22]. Dental pulp temperature increases beyond approximately 5.5 • C may cause irreversible pulpitis [23].…”

Section: Discussionmentioning

confidence: 99%

The Effects of Antimicrobial Photodynamic Therapy Used to Sterilize Carious Dentin on Rat Dental Pulp Tissue

Takahashi,

Sato,

Shinkai

2023

Dentistry Journal

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Antimicrobial photodynamic therapy (aPDT) used to sterilize carious dentin may irritate pulp tissues because of tissue-penetrating laser and singlet oxygen generation. This study aimed to assess the effects of aPDT on rat pulp tissues. A cavity formed in a rat maxillary first molar was treated with aPDT. The combined photosensitizer and laser irradiation conditions in the aPDT groups were as follows: methylene blue and 100 mW for 60 s, brilliant blue (BB) and 100 mW for 60 s, BB and 50 mW for 120 s, and BB and 200 mW for 30 s. Each cavity was treated with an all-in-one adhesive and filled with flowable resin. aPDT was not applied for the control. In each group, the rats were sacrificed on postoperative days 1 and 14, and thin sections of the treated teeth were prepared. Pulp tissue disorganization (PTD), inflammatory cell infiltration (ICI), and tertiary dentin formation (TDF) were evaluated. At 1-day evaluation, there were significant differences between the aPDT group and controls with respect to PTD and ICI (p < 0.01); 14 days later, almost all specimens showed tertiary dentin formation. The application of aPDT caused reversible damage to the rat pulp, while in the long term, healing occurred with the formation of tertiary dentin.

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Section: Discussionmentioning

confidence: 99%

The Effects of Antimicrobial Photodynamic Therapy Used to Sterilize Carious Dentin on Rat Dental Pulp Tissue

Takahashi,

Sato,

Shinkai

2023

Dentistry Journal

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“…Consequently, the transmitted energy may rather lead to temperature increase in the pulp, which has been suggested for the Nd:YAG laser when radiating dentin slices and extracted teeth with laser parameters comparable to those used for periodontal therapy . When radiating prepared teeth with a residual dentin thickness of 0.5 mm to the pulp with a diode laser (810 nm) applying parameters comparable to those recommended for periodontal therapy, the intrapulpal temperature increased to a level, which was not too far below the critical threshold of 5.5°C . A very thin residual dentin thickness to the pulp can be found below cervical restorations especially in the lower front teeth.…”

Section: Discussionmentioning

confidence: 99%

Characterization of the transmission behavior of dental filling materials and cements for the diode lasers’ and the Nd:YAG laser's wavelengths

et al. 2019

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Objectives Diode lasers and the Nd:YAG laser are used in periodontal therapy and soft tissue surgery. Dental filling materials or cements might be inadvertently damaged. The underlying mechanism of the damage is based on the dental material's specific transmission and thus absorption behavior. Materials and Methods Twenty‐four material representatives for composites, glass ionomer cements and other material classes (e.g., compomer) were processed to 100 μm and 200 μm planar specimens and spectroscopically measured for their collimated transmission in the photo spectrometer Varian Cary 5000. The (1) mean intensity of transmitted light was determined for the laser wavelengths of interest (810 nm, 940 nm, 980 nm, 1,064 nm) and used to calculate the (2) absorption lengths. Results The (1) mean intensity of transmitted light ranged between 9.51 % (Panavia F 2.0 for 810 nm) and 96.79% (Artegral Cem for 1,064 nm) for the composite specimens (100 μm) and was—with few exceptions—near zero for the representatives of glass ionomer cement and the other material classes. The (2) absorption lengths were between 0.06 mm (Panavia F 2.0 for all wavelengths of interest) and 1.33 mm (Coltène Duo Cement Plus for 1,064 nm) for the composites and below or equal 0.15 mm (PermaCem for 1,064 nm) for the few representatives of glass ionomer cements and the other material classes with mean intensities of transmitted light, which were not near zero and thus permitted to calculate absorption lengths. Conclusions The transmission behavior varied between the different material classes and even within, albeit less pronounced. Composites generally showed the highest intensities of transmitted light and are thus least susceptible to surface damage by laser light (810 nm, 940 nm, 980 nm, 1,064 nm). The results can be used to improve and develop laser applications involving purposeful interactions between laser light and dental materials. Lasers Surg. Med. © 2019 Wiley Periodicals, Inc.

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“…Photodynamic therapy is a tool that allows a minimally invasive approach with satisfactory results both in the medical and dental fields 11,12 . It is mainly used in various branches such as endodontics, implantology, periodontology, restorative dentistry, and oral medicine 13‐19 . The use of PDT in the treatment of oral mucosal lesions has focused mainly on treating premalignant lesions 20 .…”

Section: Introductionmentioning

confidence: 99%

Topical photodynamic therapy in the treatment of benign oral mucosal lesions: A systematic review

Romano

Stasio

Lauritano

et al. 2020

J Oral Pathology Medicine

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Background The introduction of photodynamic therapy (PDT) in various branches of the dental field such as endodontics, implantology, periodontology, and restorative dentistry and oral medicine has become useful in recent decades. This systematic review presents an overview of the literature to evaluate the usefulness of topical PDT for the treatment of benign oral soft tissue lesions and to identify limitations in prior studies to improve PDT applications. Methods We performed a review of the literature using different search engines (PubMed, ISI Web of Science, and the Cochrane Library) employing MeSH terms such as "Photodynamic therapy" and "PDT" in conjunction with other terms. We utilized the Population, Intervention, Comparison, Outcomes, and Study design (PICOS) method to define our study eligibility criteria. Results Initial results were 1513. Finally, there were only 21 studies that met our selection criteria. We divided the 21 selected items into two groups: inflammatory diseases and infective diseases. Conclusions Although topical PDT is an easy to perform and well‐tolerated treatment and appears to be a valid method with promising results in the treatment of benign lesions of the oral cavity's soft tissues, further studies are needed to complete the current knowledge of this technique.

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Evaluation of temperature change during antimicrobial photodynamic therapy with two different photosensitizers in dental caries

Cited by 9 publications

References 15 publications

The Effects of Antimicrobial Photodynamic Therapy Used to Sterilize Carious Dentin on Rat Dental Pulp Tissue

The Effects of Antimicrobial Photodynamic Therapy Used to Sterilize Carious Dentin on Rat Dental Pulp Tissue

Characterization of the transmission behavior of dental filling materials and cements for the diode lasers’ and the Nd:YAG laser's wavelengths

Topical photodynamic therapy in the treatment of benign oral mucosal lesions: A systematic review

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