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Biomedical subjects

T P Croll

Publications and source records attributed to T P Croll.

At least 37 records · Page 2Linked to original sources
PubMed1997

Direct bonded Class I restorations and sealants: six options.

Decisions regarding the treatment of enamel pits and fissures, carious or not, can be difficult for the dentist; exceptional diagnostic acumen is required. In years gone by, teeth with Class I carious lesions were always restored with silver amalgam material; now, however, various treatment options are available to the clinician. Resin bonding, glass-ionomer systems, and visible light-curing technology have irrevocably changed restorative dentistry. This article reviews six methods for restoring teeth with Class I carious lesions or sealing those with susceptible pits and fissures.

Composite Resins↗
PubMed1997

Glass-ionomer cements in restorative dentistry.

This article reviews the current status and future prospects for glass-ionomer materials. These materials are of two chemical types: the older, self-hardening cements, which set by an acid-base neutralization reaction to give relatively brittle materials; and the newer, resin-modified cements, which set partly by polymerization and partly by neutralization. Compared with the self-hardening cements, the latter materials have improved esthetics, improved resistance to moisture, and greater toughness. Both types of glass-ionomer cement bond well to enamel and dentin and release a clinically useful amount of fluoride. They have been used in a variety of applications: as liners or bases, for luting of stainless steel crowns, for Class V restorations in permanent teeth, and for Class II and Class III restorations in primary teeth. The resin-modified glass-ionomers are particularly promising for these latter uses, although it is too early to be sure whether their long-term durability is sufficient. Self-hardening glass-ionomer materials are likely to retain specific niches of clinical application, including in their metal-reinforced and cermet-containing forms.

Composite Resins↗
PubMed1996

Preformed resin-veneered stainless steel crowns for restoration of primary incisors.

Stainless steel crown forms with bonded resin veneers for primary incisors are commercially available to dentists. This type of preveneered crown was developed to serve as a convenient, durable, reliable, and esthetic solution to the difficult challenge of restoring severely carious primary incisors. This article describes preveneered crowns, reviews their advantages and disadvantages, and details a technique for placement of such restorations.

Child↗
PubMed1996

Treatment of complex traumatic anterior dental injuries: a pediatric case report.

Traumatic injuries of permanent teeth in children present complex challenges. Growth and development influences, orthodontic considerations, and unknown endodontic and periodontal sequelae preclude immediate intervention with long-term restorations. "Interim" solutions are required to return the patient to the normal appearance, function, and health of the dental/alveolar complex until maturation of the patient allows long-term treatment planning. This report outlines diagnosis and treatment of multiple injuries, sustained by the maxillary anterior teeth. Step-by-step clinical procedures and their rationale are described. The learning objective of this case report is to outline the principles for management of traumatic injuries of permanent anterior teeth in young patients and to demonstrate clinical techniques for splinting displaced teeth, bonding fractured teeth, providing endodontic therapy, and fabricating adhesively bonded resin composite restorations for interim full coverage of severely damaged permanent incisors in a child.

Bicycling↗
PubMed1996

Correction of anterior tooth crossbite with bonded resin-composite slopes.

Chief disadvantages of the reversed stainless steel crown method for crossbite correction are the difficulty in adapting a preformed crown to fit the tooth in crossbite and the metallic appearance of the steel crown form. An inclined plane with ideal mechanical advantage for correction of individual anterior tooth crossbite can often be custom sculpted of resin composite and bonded in position. Treatment is rapid and inexpensive and requires little cooperation from the patient. The report describes and documents two cases that used bonded resin-composite slopes for anterior tooth crossbite correction.

Child↗
PubMed1996

The quintessential sealant?

A method of placing a reinforced resin-bonded sealant is described. When the beneficial properties of resin-bonded sealants are combined with those of preventive resin restorations, the outcome is perhaps the "quintessential sealant."

Bisphenol A-Glycidyl Methacrylate↗
PubMed1995

Lateral-access Class II restoration using resin-modified glass-ionomer or silver-cermet cement.

Direct-access preparation of a carious proximal surface is perhaps the most conservative approach to restoration. Physical properties and handling characteristics of silver amalgam and of resin composite and lack of fluoride ion release make these materials unsuitable for direct buccal- or lingual-access proximal restoration. Insufficient strengths and radiolucency of self-hardening glass-ionomer cements preclude their use for Class II restorations. However, glass-ionomer silver-cermet cement and some resin-modified glass-ionomer materials are proving useful for non-stress-bearing Class II restorations and may have applications in preventive dentistry. This article describes lateral-access Class II restoration with modified glass-ionomer cements. Emphasis is placed on careful handling of materials, maintenance of an ideal operative field, and conservation of tooth structure.

Cermet Cements↗
PubMed1995

Restorative dentistry for preschool children.

Successful management of the behavior of the preschool child is a prerequisite for the dental experience to be pleasant for both the child and the dentist. There are many ways for the dentist to interface with children, but none is as desirable with cooperative or potentially cooperative preschool children than techniques in the linguistic domain. Fortunately, because most children are very competent in communicating in language sometime around their third birthday, such techniques are reliably effective with preschool children. Knowing the reasons why a seemingly potentially cooperative preschooler may not be so is important to the dentist seeking mastery skills in working with this age group. Another extremely important issue in behavioral pediatric dentistry at this time is the role of the parents in the dental appointment and their right to informed consent for certain behavioral management strategies.

Child Behavior↗
PubMed1995

Electronic anesthesia for primary molar restoration in a 27-month-old child: a case report.

Injection of local anesthetic is not the only method of achieving complete control of pain sensation during restorative dentistry for very young patients. Transcutaneous electronic nerve stimulation, also known as electronic anesthesia, can be used solely or in combination with nitrous oxide-oxygen inhalation or auditory diversion with music to assure the comfort and safety of some youngsters. This article documents placement of a Class I resin-modified glass-ionomer restoration in a severely carious maxillary primary first molar of a 27-month-old girl. Electronic anesthesia and nitrous oxide-oxygen inhalation were used in lieu of an anesthetic injection.

Anesthesia, Dental↗
PubMed1995

Carbamide peroxide bleaching of teeth with dentinogenesis imperfecta discoloration: report of a case.

Carbamide peroxide dental bleaching has gained much popularity in the past 5 years. Because tooth discoloration caused by dentinogenesis imperfecta involves deep, dark, dentinal stain, practitioners might believe that affected teeth would be resistant to color improvement by bleaching. This article reports the successful use of carbamide peroxide at-home bleaching in a teenager with dentinogenesis imperfecta. Six-month treatment results are shown.

Adolescent↗
PubMed1995

Enamel microabrasion: 10 years experience.

Enamel microabrasion was developed in the mid 1980's as a method of eliminating enamel discolouration defects and improving the appearance of teeth. Ten years after the method was developed, much has been learned about the best technique, long term results of treatment and microscopic changes to the enamel surface that have distinguishable clinical implications. In addition, certain patients can benefit from combined enamel microabrasion/tooth bleaching therapy that yields the most attractive cosmetic results. This article reviews the current status of enamel microabrasion one decade after its introduction to the profession. The latest treatment protocol is presented and photographic case histories document results of treatment. Clinical observations made over ten years are discussed.

Adolescent↗
PubMed1994

Tooth bleaching for children and teens: a protocol and examples.

Even though there has been much interest in dental bleaching in recent years, little has been reported about patient-applied carbamide peroxide tooth bleaching for children and adolescents. This technique article describes "at home" tooth bleaching for young patients and offers a proven protocol for the procedure. Representative cases are documented with pretreatment and posttreatment photographs. Bleaching in conjunction with enamel microabrasion is also reviewed.

Adolescent↗
PubMed1994

Vitremer cement for Class I restoration of permanent teeth.

Since their introduction in 1992, light-hardened glass ionomer resin cements have shown great versatility for use in nonstressbearing restorations. On-command hardening, adhesive bonding, fluoride release, biocompatibility, and favorable thermal expansion and contraction properties are significant advantages to this class of materials. One such cement has shown excellent durability for more than 2 years, when used as a Class I restorative material for permanent posterior teeth. The objective of this article is to familiarize the reader with this relatively new cement and to describe a procedure for placement of intracoronal light-hardened glass ionomer resin restorations. Four cases are used to illustrate the clinical procedure.

Composite Resins↗
PubMed1994

Resin-bonded ceramic onlays for retained primary molars with infraocclusion.

In some patients, primary molars with no permanent successor can be retained for an indefinite time; however, if occlusal relationships necessitate intraocclusal augmentation, cast ceramic onlays can provide an excellent solution. This paper reports the case of a teenager in whom two cast ceramic onlays were bonded with resin to retained mandibular primary molars, to create an esthetic and functional occlusion.

Adolescent↗