The practical application of stainless steel in the construction of fixed orthodontic appliances

Using stainless steel auxiliary ligatures in conjunction with fixed orthodontic appliances is of paramount importance in many stages of orthodontic treatment. There is a lack of articles in the literature that provides a comprehensive review of the uses of different methods of ligation in orthodontic treatment. The aim of this article is to provide an illustrated review of their use with fixed appliances; moreover, it will provide practical tips for their appropriate use. CPD/Clinical Relevance: This article aims to provide a review, with detailed illustration, of the use of stainless steel ligatures in orthodontic treatment.

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Corrosion Damage Investigation of Silver-Soldered Stainless Steel Orthodontic Appliances Used in Vivo / Ocena Zniszczeń Korozyjnych Używanych In Vivo Stałych Aparatów Ortodontycznych O Połączeniach Lutowanych Na Bazie Srebra

Archives of Metallurgy and Materials ◽

10.1515/amm-2015-0415 ◽

2015 ◽

Vol 60 (4) ◽

pp. 2569-2572

Author(s):

M. Łępicka ◽

M. Grądzka-Dahlke ◽

I. Szarmach

Keyword(s):

Stainless Steel ◽

Corrosion Damage ◽

Orthodontic Appliances ◽

Palatal Expansion ◽

Rapid Palatal Expansion ◽

Dental Prostheses ◽

Fixed Orthodontic Appliances ◽

Differential Element ◽

Corrosion Pits

Processes of destruction of products used in orthodontic treatment, e.g. fixed orthodontic appliances, microimplants or dental prostheses considerably limit its operational lifetime and comfort and safety of patients. The objective of the research was to evaluate and assess corrosion damage to silver-soldered stainless steel rapid palatal expansion Hyrax devices. Used in vivo for 2 or 6 months, respectively, RPE (rapid palatal expansion) devices were analyzed macroscopically and in a scanning electron microscope with an energy X-ray analyzer for signs of corrosion. The evaluated appliances showed discernible differences between the overall condition of the noble solders and the stainless steel elements. The Ag-rich solders were chiefly covered in corrosion pits, whereas stainless steel wires, molar bands and Hyrax screws presented corrosion-free surfaces. What is more, the EDS analysis showed differential element composition of the solders. According to the results, noble materials, such as Ag-rich solders, can corrode in a salivary environment when coupled with stainless steel. The selective leaching processes are observed.

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The practical opplication of stainless steel in the construction of fixed orthodontic appliances

THE JOURNAL OF THE STOMATOLOGICAL SOCIETY JAPAN ◽

10.5357/koubyou1927.8.4_364 ◽

1934 ◽

Vol 8 (4) ◽

pp. 364-365

Keyword(s):

Stainless Steel ◽

Orthodontic Appliances ◽

Fixed Orthodontic Appliances

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The impact of fixed orthodontic appliances on oral microbiome dynamics in Japanese patients

Scientific Reports ◽

10.1038/s41598-020-78971-2 ◽

2020 ◽

Vol 10 (1) ◽

Author(s):

Isamu Kado ◽

Junzo Hisatsune ◽

Keiko Tsuruda ◽

Kotaro Tanimoto ◽

Motoyuki Sugai

Keyword(s):

Relative Abundance ◽

Japanese Patients ◽

Oral Microbiome ◽

Orthodontic Appliances ◽

Periodontal Pathogens ◽

Supragingival Plaque ◽

Fixed Orthodontic Appliances ◽

Microbial Dna ◽

The Impact ◽

Level Analysis

AbstractFixed orthodontic appliances are common and effective tools to treat malocclusion. Adverse effects of these appliances, such as dental caries and periodontitis, may be associated with alteration of the microbiome. This study investigated the impact of these appliances on the dynamics of the oral microbiome. Seventy-one patients were selected. Supragingival plaque samples were collected before placement (T0) and six months after placement (T1). Saliva samples were collected at T0 and T1, and then when appliance removal (T2). Microbial DNA was analyzed by 16S rRNA meta-sequencing. The diversity analysis indicated dynamic changes in the structure of the oral microbiome. Taxonomic analysis at phylum level showed a significant increase in Bacteroidetes and Saccharibacteria (formally TM7) and decrease in Proteobacteria and Actinobacteria over time, in both plaque and saliva. Genus level analysis of relative abundance indicated a significant increase in anaerobic and facultative anaerobes in both plaque and saliva. Fixed orthodontic appliances induced measurable changes in the oral microbiome. This was characterized by an increase in relative abundance of obligate anaerobes, including periodontal pathogens. It can be concluded that this dysbiosis induced by fixed orthodontic appliances is likely to represent a transitional stage in the shift in microbiome from healthy to periodontitis.

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A single-centre investigator-blinded randomised parallel group clinical trial to investigate the effect of probiotic strainsStreptococcus salivariusM18 andLactobacillus acidophiluson gingival health of paediatric patients undergoing treatment with fixed orthodontic appliances: study protocol

BMJ Open ◽

10.1136/bmjopen-2019-030638 ◽

2019 ◽

Vol 9 (9) ◽

pp. e030638 ◽

Cited By ~ 2

Author(s):

Eleftherios G Kaklamanos ◽

Rania Nassar ◽

Sotirios Kalfas ◽

Manal Al Halabi ◽

Mawlood Kowash ◽

...

Keyword(s):

Treatment Group ◽

Oral Hygiene ◽

Oral Microbiome ◽

Control Group ◽

Orthodontic Appliances ◽

Single Centre ◽

Paediatric Patients ◽

Gingival Health ◽

Parallel Group ◽

Fixed Orthodontic Appliances

BackgroundThere is limited data on the beneficial effects of probiotics on the gingival health of patients undergoing treatment with fixed orthodontic appliances. This study aims to compare the effect of probiotic tablets combined with regular oral hygiene versus regular oral hygiene alone on gingival status in these patients. The effect of probiotic intake on plaque formation and salivary microbiome composition will be also assessed.Methods and analysisThis is a 3 month single-centre, single blind (clinical and laboratory examiners), parallel group randomised controlled two arm superiority trial. Fifty paediatric patients attending the Postgraduate Orthodontic Clinic at the Hamdan Bin Mohammed College of Dental Medicine (HBMCDM), Mohammed Bin Rashid University of Medicine and Health Sciences (MBRU), Dubai, United Arab Emirates, who meet the eligibility criteria will be recruited. Block randomisation with 1:1 allocation and concealment of allocation will be carried out. The treatment group will receive probiotic tablets containingStreptococcus salivariusM18 andLactobacillus acidophilustogether with regular oral hygiene versus the control group on regular oral hygiene alone. Clinical examination and collection of saliva for microbiome assay will be carried out at baseline and end of study. Self-reporting by patients will be used to document acceptability and adverse effects. Statistically significant decrease in gingival bleeding on probing in the treatment group will be classified as primary outcome of treatment success. Statistically significant reduction in Plaque Index, Gingival Index and shift in the composition of the oral microbiome in favour of beneficial bacteria are secondary outcomes indicative of efficacy of probiotic intake.Ethics and disseminationEthical approval for the study has been granted by the HBMCDM, MBRU, Institutional Review Board (Reference #: MBRU-IRB-2018–015). Study findings will be disseminated via publication in peer-reviewed journal.Trial registration numberISRCTN95085398

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