Current perspectives on dental adhesion: (1) Dentin adhesion – …
2020年11月1日 · This adhesion-decalcification (AD) concept is still relevant. Etch-and-rinse (ER) adhesives follow the decalcification pathway derived from phosphoric acid etching, whereas mild self-etch (SE) adhesives (pH ≈ 2), such as those that contain 10-methacryloyloxydecyl dihydrogen phosphate or 10-MDP (MDP), tend to follow the adhesion pathway.
The Basics of Adhesion to Enamel and Dentin According to the AD Concept …
The ‘adhesion-decalcification concept' or ‘AD-concept' describes how acidic molecules interact with hydroxyapatite-based substrates. In a first step, the molecule electro-statically interacts with hydroxyapatite. Depending on the stability of this bond, the …
Adhesion: 14 Basics in Adhesion Technology | Pocket Dentistry
2020年5月23日 · The way molecules interact with hydroxyapatite-based tissues has been described in the so-called AD-concept or Adhesion–Decalcification concept .18 This model dictates that initially all acids bond chemically (ionically) to the calcium of hydroxyapatite (Phase I). Whether the molecule will remain bonded (Phase II, Option 1), or will de-bond ...
Adhesion/decalcification mechanisms of acid interactions with …
2001年10月5日 · In order to study adhesion/decalcification mechanisms of acid interactions with human hard tissues such as bones and teeth, the chemical interaction of five carboxylic acids (acetic, citric, lactic, maleic, and oxalic) and two inorganic acids (hydrochloric and nitric) with enamel and two synthetic hydroxyapatite (HAp) powders with, respectively ...
Current perspectives on dental adhesion: (1) Dentin adhesion – …
The most recent milestone was associated with the adhesion-decalcification concept (AD-concept) for adhesion to dentin [22,23]. This concept was originally described for carboxylic acids. When these acids are applied on hydroxyapatite they first form ionic bonds to calcium, which may be dependent on the pKa of each acid.
Adhesion to and decalcification of hydroxyapatite by
Based on these data, an adhesion/decalcification concept was advanced that predicts that carboxylic acids, regardless of concentration/pH, either adhere to or decalcify hydroxyapatite, depending on the dissolution rate of the respective calcium salts in the acid solution.
Adhesion- Decalcification concept . The recent concept of adhesion with self etch adhesives is based on the PH of the acidic monomers, they either decalcify or bond chemically with hydroxyapatite. This led to adhesion – decalcification concept, as described by Van Meerbeek degradation of adhesive components could lead to reduced [5].
Adhesive Dentistry – Current Concepts and Clinical Considerations
2021年3月1日 · Overview: Adhesive dentistry has undergone major transformations within the last 20 years. New dental adhesives and composite resins have been launched with special focus on their user-friendliness...
Chemical analyses in dental adhesive technology - ScienceDirect
2012年8月1日 · The way molecules interact with apatite-based tissues can be described by the so-called “AD-concept” or “Adhesion-Decalcification concept” (Fig. 17) 63, 64. This model shows that initially all acids chemically (ionically) bond to calcium of HAp.
From Buonocore's Pioneering Acid-Etch Technique to Self …
It involves an adhesion (Figs 5a1,a2) and decalcification route (Fig 5b). The key point is the formation of a stable ionic bond to calcium (Ca) within HAp or, in other words, the molecule’s capacity to produce stable monomerCa salts.