Biomedical subjects
Publications and source records attributed to H Harbert.
Slow growth calcium hydroxide apexification may be clinically impractical in some instances. This case report describes a technique and rationale for single-step use of tricalcium phosphate as an apical plug in an immature permanent root. This method permitted immediate canal obturation and placement of the permanent coronal restoration. A 7-yr follow-up confirmed that this type of apexification could be successful.
Unusual endodontic situations may necessitate an immediate plug inside the tooth in order to dry the canal system and provide resistance to condensation. Generic tricalcium phosphate is a powder that when hydrated handles like silver amalgam and is condensable into a hard plug deep inside the tooth. It is fast, relatively technique insensitive, comfortable postoperatively, biocompatible, inexpensive, and readily available. A practical technique is presented and two case reports illustrate its use as an apical plug and a furcation perforation plug.
Palatal injections seem to be a painful experience for many patients despite modern injection techniques. Topical cooling has long been used for numbing pain on the body surface. A technique is described which utilizes topical ice on the palate before and during a local infiltration to relieve discomfort. The mechanism of cold transfer through the mucosa and its effect on nerves is discussed. The ice application is readily acceptable by apprehensive teenagers and adults. This technique is comfortable, safe, and physiologically effective.