Prins, F. X.Retief, Daniel Hugo2022-04-192024-06-042022-04-192024-06-041984https://hdl.handle.net/10566/15866Philosophiae Doctor - PhDFour spectrophotometric procedures for the analysis of phosphorus were evaluated (1F1). The phosphorus concentrations in saliva and dentine were determined. All four analytical procedures were accurate but the one method was the most sensitive. An acid etch enamel biopsy procedure which was originally developed in Switzerland was modified in our laboratory (#2). It was subsequently shown by other investigators that the modified technique was much more accurate for the determination of the fluoride concentration in enamel than the original procedure.enClinical dentistryPhosphorusEnamelOrthodontistsUniversity of Stellenbosch