Review Articles 
Langerhans’ Cell Histiocytosis: Case Reports and Literature Review 
By Robert J. Henry, Edward A. Sweeney

A Clinical and Research Protocol for Characterizing Patients With Hypophosphatasia 
By Ching-Chun Hu, David L. King, Huw F. Thomas, James P. Simmer

Scientific Articles 
Effect of One- and Four-minute Treatments of Topical Fluorides on a Composite Resin 
By Katherine Kula, E. Leland Webb, Theodore J. Kula

A Comparison of Six Enamel Treatment Procedures for Sealant Bonding 
By Janniece R. Brown, Wayne W. Barkmeier

Intranasal Midazolam Better at Effecting Amnesia After Sedation Than Oral Hydroxyzine: A Pilot Study 
By Ari Kupietzky, Gideon Holan, Joseph Shapira

The Effects of Nitrous Oxide on Behavior and Physiological Parameters During Conscious Sedation With a Moderate Dose of Chloral Hydrate and Hydroxyzine 
By Wes McCann, Stephen Wilson, Peter Larsen, Bill Stehle

The Composition of Subgingival Microflora in Two Groups of Children With and Without Primary Dentition Alveolar Bone Loss 
By Enrique Bimstein, Diana Ram, Ronit Naor, Michael N. Sela

Dental Agenesis in Hemifacial Microsomia 
By A. Silvestri, G. Natali, M.T. Fadda

A Comparison of the Pulpal Response to Freeze-dried Bone, Calcium Hydroxide, and Zinc Oxide-eugenol in Primary Teeth in Two Cynomolgus Monkeys 
By Shahrbanoo Fadavi, Allen W. Anderson

Predicting Pulpectomy Success and its Relationship to Exfoliation and Succedaneous Dentition 
By James A. Coll, Roya Sadrian

Case Reports 
Congenitally Missing Permanent Lateral Incisors in Conjunction With a Supernumerary Tooth: Case Report 
By Jian-Fu Zhu, Ralph Crevoisier, Robert J. Henry

Pre-eruptive Resorption of Dentin in the Primary and Permanent Dentitions: Case Reports and Literature Review 
By W. Kim Seow, Donna Hackley

Special Reports 
Academicians’ Session: The Evaluation of Postgraduate Students in Pediatric Dentistry 
By Ann L. Griffen

Editorial 
Think Outside the Box! 
By Paul S. Casamassimo