Enamel gloss changes induced by orthodontic bonding

Sifakakis, Iosif; Zinelis, Spiros; Εliades, George; Koletsi, Despina; Eliades, Theodore

doi:10.1080/14653125.2018.1542266

Cited by 7 publications

(4 citation statements)

References 25 publications

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“…One of the main advantages of the early phase of aligners was the absence of any involvement of enamel in the treatment of malocclusions. Although the application spectrum of aligner treatment was limited to class I crowding cases, the fact that orthodontic treatment of these cases involved no acid-etching mediated bonding offered an advantage owing to the maintenance of the structural integrity of enamel, [1][2][3][4][5][6] with favorable outcome on the potential for white spot lesions, decalcification, 7 avoidance of the use of rotary instruments to grind the remnants of adhesives after debonding, and essentially lack of long-term change of the enamel's optical properties [8][9][10] since the absence of resin tags warrants that the surface would be intact.…”

Section: Enamel Involvementmentioning

confidence: 99%

The use of attachments in aligner treatment: Analyzing the “innovation” of expanding the use of acid etching–mediated bonding of composites to enamel and its consequences

Eliades

Papageorgiou

Ireland

2020

American Journal of Orthodontics and Dentofacial Orthopedics

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Orthodontic treatment with sequential aligners has seen a considerable surge in the last decades, and is currently used to treat malocclusions of varying severity. To enhance tooth movement and broaden the spectrum of malocclusions that can be treated with aligners, composite resin attachments are routinely bonded with the acid-etch technique on multiple teeth, a process known to impose irreversible alterations of the enamel structure, color, gloss, and roughness. Additionally, this clinical setting introduces a unique scenario of different materials applied in a manner that involves the development of friction and attrition between the attachment and the softer aligner material, all performing in the harsh conditions of the oral environment, which impact the aging of these materials. The latter may give rise to alterations of the aligners and the composite attachments and potential intraoral release of Bisphenol A, a known endocrine disrupting agent. Furthermore, at the final stages of contemporary aligner treatment, the removal of multiple, sometimes bulky, composite attachments with a volume and surface far greater than the remnant adhesive after debonding of brackets, through grinding that might be associated with pulmonary effects for the patient or staff. Because of the extensive enamel involvement in bonding, the release of factors from the attachment-aligner complex during service, the aging of these entities in the oral environment, and the laborious debonding/composite grinding process coupled with the hazardous nature of aerosol produced during the removal of these bulky specimens, appropriate risk management considerations should be applied and an effort to confine the application of multiple composite specimens bonded to enamel to the absolutely necessary should be pursued.

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Section: Enamel Involvementmentioning

confidence: 99%

The use of attachments in aligner treatment: Analyzing the “innovation” of expanding the use of acid etching–mediated bonding of composites to enamel and its consequences

Eliades

Papageorgiou

Ireland

2020

American Journal of Orthodontics and Dentofacial Orthopedics

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“…2). Furthermore, enamel surfaces are altered when fixed appliances or aligner attachments are removed [166,167]. It is unknown if altered enamel surfaces are predisposed to abfraction, but roughened enamel surfaces may retain plaque and facilitate caries [88].…”

Section: Combined Etiologymentioning

confidence: 99%

Pathophysiology of Demineralization, Part I: Attrition, Erosion, Abfraction, and Noncarious Cervical Lesions

Roberts

Mangum

Schneider

2022

Curr Osteoporos Rep

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Purpose of the Review Compare pathophysiology for infectious and noninfectious demineralization disease relative to mineral maintenance, physiologic fluoride levels, and mechanical degradation. Recent Findings Environmental acidity, biomechanics, and intercrystalline percolation of endemic fluoride regulate resistance to demineralization relative to osteopenia, noncarious cervical lesions, and dental caries. Summary Demineralization is the most prevalent chronic disease in the world: osteoporosis (OP) >10%, dental caries ~100%. OP is severely debilitating while caries is potentially fatal. Mineralized tissues have a common physiology: cell-mediated apposition, protein matrix, fluid logistics (blood, saliva), intercrystalline ion percolation, cyclic demineralization/remineralization, and acid-based degradation (microbes, clastic cells). Etiology of demineralization involves fluid percolation, metabolism, homeostasis, biomechanics, mechanical wear (attrition or abrasion), and biofilm-related infections. Bone mineral density measurement assesses skeletal mass. Attrition, abrasion, erosion, and abfraction are diagnosed visually, but invisible subsurface caries <400μm cannot be detected. Controlling demineralization at all levels is an important horizon for cost-effective wellness worldwide.

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“…Despite these notable clinical advantages, the use of composite attachments is not free of concern. The acid etching-mediated bonding annihilates enamel structure integrity [ 9 , 10 ], increases the risk of decalcification and white spot lesions [ 11 ], and alters the enamel’s optical properties [ 12 , 13 ]. Moreover, the potential release of cytotoxic and estrogenic monomers and compounds such as Bisphenol-A (BPA) could have hazardous health effects.…”

Section: Introductionmentioning

confidence: 99%

Salivary levels of eluents during Invisalign™ treatment with attachments: an in vivo investigation

Stocker,

Zervou,

Papageorgiou

et al. 2024

Prog Orthod.

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Background The aim of the present study was to investigate qualitatively and quantitatively the elution of substances from polyester-urethane (Invisalign™) aligners and resin composite attachments (Tetric EvoFlow) in vivo. Methods Patients (n = 11) treated with the aligners and attachments (16 per patient, without other composite restorations) for an average of 20 months, who were planned for attachment removed were enrolled in the study. Patients were instructed to rinse with 50 mL of distilled water upon entry and the rinsing solution was collected (before removal). Then, the attachments were removed with low-speed tungsten carbide burs for adhesive residue removal, a thorough water rinsing was performed immediately after the grinding process to discard grinding particle residues, and subsequently, after a second water-rinsing the solution was collected for analysis (after removal). The rinsing solutions were analyzed for targeted (LC-MS/MS: Bis-GMA, DCDMA, UDMA, BPA) and untargeted (LC-HRMS: screening of leached species and their degradation products) compounds. Results Targeted analysis revealed a significant reduction in BPA after attachment removal (4 times lower). Bis-GMA, DCDMA, UDMA were below the detection limit before removal but were all detectable after removal with Bis-GMA and UDMA at quantifiable levels. Untargeted analysis reviled the presence of mono-methacrylate transformation products of Bis-GMA (Bis-GMA-M1) and UDMA (UDMA-M1), UDMA without methacrylate moieties (UDMA-M2), and 4-(dimethylamino) benzoic acid (DMAB), the degradation product of the photo-initiator ethyl-4-(dimethylamino) benzoate (EDMAB), all after attachment removal. Several amino acids and endogenous metabolites were also found both before and after removal. Conclusions Elevated levels of BPA were traced instantaneously in patients treated with Invisalign™ and flowable resin composite attachments for the testing period. BPA was reduced after attachment removal, but residual monomers and resin degradation products were found after removal. Alternative resin formulations and attachment materials may be utilized to reduce eluents.

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Enamel gloss changes induced by orthodontic bonding

Cited by 7 publications

References 25 publications

The use of attachments in aligner treatment: Analyzing the “innovation” of expanding the use of acid etching–mediated bonding of composites to enamel and its consequences

The use of attachments in aligner treatment: Analyzing the “innovation” of expanding the use of acid etching–mediated bonding of composites to enamel and its consequences

Pathophysiology of Demineralization, Part I: Attrition, Erosion, Abfraction, and Noncarious Cervical Lesions

Salivary levels of eluents during Invisalign™ treatment with attachments: an in vivo investigation

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