Research Article
Exploration of Metal Ion Release from Nickel-Chromium Denture Material: The Role of Saliva pH and Immersion Duration
Issue:
Volume 10, Issue 2, December 2024
Pages:
18-30
Received:
27 August 2024
Accepted:
18 September 2024
Published:
10 October 2024
Abstract: Nickel chromium (NiCr) is a fixed denture material. Nickel has good physical, and mechanical properties, cheap, but it has low corrosion resistance. One way to increase corrosion resistance is to modify the metal surface by silver plating using the electroplating method. This study examines the effect of saliva pH and immersion time of NiCr metal with silver plating on the release of nickel, chromium, and silver ions. Laboratory experimental studies were 27 samples of NiCr with silver plating (Ø= 10 x 10 x 2 mm) immersed in saliva and divided into 9 groups (n=3): group I (pH 5 for 5 days), group II (pH 7 for 5 days), group III (pH 9 for 5 days), group IV (pH 5 for 10 days), group V (pH 7 for 10 days), group VI (pH 9 for 10 days), group VII (pH 5 for 15 days), group VIII (pH 7 for 15 days), group IX (pH 9 for 15 days). Nickel, chromium, and silver ions release was measured using atomic absorption spectrophotometry. The data obtained were analyzed using two-way ANOVA and post hoc LSD with a 95% confidence level (α =0.05). The results showed a significant difference between salivary pH and immersion time on the ion release (p<0.05). The release of nickel and silver ions increases at acidic pH, while the release of chromium ions increases at alkaline pH. Prolonged immersion (for 15 days) in saliva increases the release of nickel and chromium ions but decreases the release of silver ions.
Abstract: Nickel chromium (NiCr) is a fixed denture material. Nickel has good physical, and mechanical properties, cheap, but it has low corrosion resistance. One way to increase corrosion resistance is to modify the metal surface by silver plating using the electroplating method. This study examines the effect of saliva pH and immersion time of NiCr metal w...
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Review Article
Maxillary Sinus Lift Surgery: “Description and Comparison of the Different Techniques” Clinical Case of Sinus Lift and Placement of Phibo TSH and TSA Implants
Antonio Macías Lloret*,
Carlos Parra Rogel
Issue:
Volume 10, Issue 2, December 2024
Pages:
31-39
Received:
6 June 2024
Accepted:
31 July 2024
Published:
29 November 2024
Abstract: A bibliographic review was carried out on the different procedures and most common materials for augmentation or elevation of the maxillary sinus for the posterior or joint placement of endosseous implants. The objective of this work is to present a clinical case and review the existing literature. The topic has been widely discussed by different specialists, describing the different techniques, and also that it is a procedure with a high success rate. On the other hand, it can usually be performed in an outpatient clinic, respecting the concepts of asepsis that must be considered in oral surgery procedures: correct preparation of the equipment, sterilization of instruments and disinfection of the surgical field. That is, all instruments in previously sterilized airtight bags, surgical fields and sterile gloves, table and equipment, all properly disinfected. In addition, both the care team and the surgeon must have disposable sterile surgical caps and gowns. It is important to highlight that when handling bone fillers, they must also be packaged with the maximum sterilization protocols for their use.
Abstract: A bibliographic review was carried out on the different procedures and most common materials for augmentation or elevation of the maxillary sinus for the posterior or joint placement of endosseous implants. The objective of this work is to present a clinical case and review the existing literature. The topic has been widely discussed by different s...
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