Peter H. Buschang

Texas A&M University

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Phillip M. Campbell

Texas A&M University

Gaylord S. Throckmorton

The University of Texas Southwestern Medical Center

Rolf G. Behrents

Saint Louis University

Robert M. Malina

University of Louisville

P. Emile Rossouw

University of Rochester

A Demirjian

Université de Montréal

Bertis B. Little

University of Louisville

Larry P. Tadlock

Texas A&M University

Helder B. Jacob

The University of Texas Health Science Center at Houston

Lynne A. Opperman

International Craniofacial Institute

Cooperative Institutions

Texas A&M University System

Texas A&M University

Baylor University

Texas A&M Health Science Center

Baylor College of Medicine

The University of Texas Southwestern Medical Center

Saint Louis University

The University of Texas at Austin

Universidade Estadual Paulista (Unesp)

The University of Texas at Arlington

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Consumo de alimentos en una comunidad rural zapoteca en el valle de Oaxaca

Estudios de Antropología Biológica (2012)

Ma. Eugenia Peña Reyes Robert M. Malina Bertis B. Little Peter H. Buschang

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Citations (6)

Maxillary and mandibular width changes studied using metallic implants

American Journal of Orthodontics and Dentofacial Orthopedics (2000)

Luiz Gonzaga Gandini Peter H. Buschang

Premolar

Basal (medicine)

Mandible (arthropod mouthpart)

10.1016/s0889-5406(00)70251-4

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Citations (27)

Incisor crowding in untreated persons 15-50 years of age: United States, 1988-1994.

PubMed (2003)

Peter H. Buschang Jay D. Shulman

The purpose of this study was to (1) describe the prevalence of mandibular incisor irregularity (II) among untreated adults in the United States and (2) evaluate the factors explaining individual differences in II. Data were derived for a random sample of 9044 individuals (49% male and 51% female; 35% Mexican American, 34% black, and 31% white) between 15 and 50 years of age collected as part of the Third National Health and Nutrition Examination Survey. Although the differences were small (0.5 mm), males had significantly greater II than did females; blacks showed less II than did whites (0.9 mm) and Mexican Americans (1.1 mm). Family income was negatively related with II. Incisor irregularity increased in a curvilinear fashion with age, with the greatest increases occurring during early adulthood. Although the number of premolars and molars (first and second) were positively related with II, the presence of third molars had a negative effect on II. Multivariate Poisson regression analyses showed that the ethnicity, the number of first and second molars, sex, and age combined to explain differences in II. Odds ratios were relatively low, indicating that these factors explained relatively small amounts of between-subject variation. We conclude that (1) approximately 50% of individuals in the United States who were 15-50 years of age have little or no II, 23% have moderate II, and 17% have severe irregularity, (2) erupted third molars are not associated with increased crowding, (3) crowding increases most during early adulthood, and (4) although individual differences in crowding are multifactorial, the primary determinants remain unidentified.

Crowding

10.1043/0003-3219(2003)073<0502:iciupy>2.0.co;2

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Citations (91)

Can commonly used profile planes be used to evaluate changes in lower lip position?

The Angle Orthodontist (2011)

Peter H. Buschang Kimberly Fretty Phillip M. Campbell

To determine the validity of five profile planes commonly used to describe the horizontal changes of the lower lip during orthodontic treatment.Pretreatment and posttreatment cephalograms of 79 patients (12.4 ± 2.8 years of age) were evaluated. Lower lip (labrale inferiorus) changes over time were measured relative to the Rickett's E-line, Steiner's S1-line, Burstone's B-line, Sushner's S2-line, and Holdaway's H-line. As an independent measure of actual horizontal lip changes, the labrale inferiorus was measured relative to a stable reference plane registered on the sella and oriented on the SN-7°.The lower lip actually moved anteriorly 2.35 ± 3.35 mm during orthodontic treatment; the five profile planes indicated that the lower lip moved to a more retrusive, posterior position. The five profile planes also showed no statistically significant sex differences in terms of the treatment changes that occurred, while the actual lip changes showed that males exhibited significantly greater changes than females. Actual treatment changes showed that the lower lip moved to a more protrusive position with nonextraction than with extraction treatments, changes that were not evident based on the five profile lines. While lip changes based on the five profile planes demonstrated moderately high to high intercorrelations ranging from 0.81 to 0.97, they showed only weak correlations (r < .35) with the actual horizontal changes of the labrale inferiorus.While all five planes measured similar aspects of positional change, none of them closely reflected the actual lower lip changes that occurred. These planes should not be used to measure changes in lip position that occur during treatment.

Lower lip

Position (finance)

Line (geometry)

Cephalometry

10.2319/081710-483.1

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Citations (15)

Masticatory performance: a protocol for standardized production of an artificial test food

Journal of Oral Rehabilitation (2003)

T.E. Albert Peter H. Buschang Gaylord S. Throckmorton

summary A protocol for standardizing the production of an artificial test food was established and its reliability was determined. An artificial test food was selected based on its superior properties compared with natural foods. The primary emphasis during production was the incorporation of all 3 cm of paste‐hardener and thoroughly kneading the material for 30 s. The curing process was studied to determine overall setting time. After at least 30 min, the physical properties of the test food were ready to be measured. The overall mean hardness of the test food was 489 ± 60 load grams. Random error between operators was ±16 load grams while batches differed by ±13 load grams and individual tablets differed by ±15 load grams. This protocol provides a reliable standardized method for future masticatory performance studies.

10.1046/j.1365-2842.2003.01155.x

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Citations (71)

Front Matter

Eustáquio A. Araújo Peter H. Buschang

The prelims comprise: Half-Title Page Dedications Title Page Copyright Page Contents Contributors Foreword

10.1002/9781118925263.fmatter

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A craniofacial growth maturity gradient for males and females between 4 and 16 years of age

American Journal of Physical Anthropology (1983)

Peter H. Buschang Robert M. Baume G. Gisela Nass

Abstract Differential growth of the craniofacial complex implies variation in ontogenetic patterns of development. This investigation quantifies the relative maturity—as defined by percent adult status—of nine cephalometric dimensions and stature. Analysis is based on 663 lateral cephalograms from a mixed longitudinal sample of 26 males and 25 females between 4 and 16 years of age. Graphic comparison of maturity status across the age range shows that variation is intergraded between the neural and somatic growth maturity patterns, as described by head height and stature, respectively. The maturity gradient moves from head height through anterior cranial base, posterior cranial base and maxillary length, upper facial height, corpus length, and ramus height to stature. After 9 years of age ramus height is less mature than stature. Anterior maxillary and mandibular heights diminish during transitional dentition and thereafter exhibit maturity patterns that compare to corpus length. Although females are consistently more mature than males, the gradient of variation between dimensions is sex independent.

Longitudinal sample

10.1002/ajpa.1330610312

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Citations (100)

The quality of etched enamel in different regions and tooth types and its significance in bonding and the development of white spot lesions

The Angle Orthodontist (2021)

Elisabeth C. Barnhart Phillip M. Campbell Amal Noureldin Katie Julien Peter H. Buschang

ABSTRACT Objectives To quantify differences in the etch quality of enamel within and between human teeth, which has not previously been attempted. Materials and Methods The buccal right and left halves of 27 extracted human teeth were randomly allocated to scanning electron microscopy (SEM) or micro–computed tomography (μCT) for evaluation. The buccal surfaces were pumiced, etched with 37% phosphoric acid gel etchant for 15 seconds, rinsed, and air dried. Each tooth was divided into three regions (incisal, middle, and cervical) and viewed after etching at 1200× magnification with SEM. The μCT scans were taken before and after etching to calculate apparent and material mineral densities. Results SEM showed greater aprismatic enamel and poorer etch quality (ie, significantly less percentage enamel) for the posterior than anterior teeth and for the cervical region than for the incisal and middle regions of all teeth. Although there were no density differences prior to etching, μCT demonstrated that etching increased material density significantly more for the anterior than posterior teeth. Prior to etching, the enamel in the cervical regions was significantly less dense than the enamel in the middle or incisal regions. Etching significantly increased the material density of all three regions, which decreased initial regional differences. After etching, the apparent density of the cervical region remained significantly lower than the densities of the other two regions. Conclusions Based on SEM and μCT, there is greater aprismatic enamel and inferior etch quality in the cervical regions of all tooth types and is clinically significant in explaining the failure of sealant retention and the propensity for white spot lesions.

10.2319/090120-761.1

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Citations (13)

Sexual dimorphism in mandibular growth of French‐Canadian children 6 to 10 years of age

American Journal of Physical Anthropology (1986)

Peter H. Buschang R. Tanguay A Demirjian L. La Palme Harvey Goldstein

Abstract Polynomial regression is used to model the mandibular growth of 28 girls and 26 boys who were followed longitudinally from 6 to 10 years of age. The pooled‐within individual designs indicate that ramus height follows a linear pattern of size increase; corpus and total mandibular lengths display curvilineal, decelerating, patterns of growth over the age range. Multivariate analyses of variance reveal significant sex differences in size, favoring boys, for the two length measures at 6 years of age. Growth velocity for corpus length is also significantly greater in boys than in girls. Sexual dimorphism in the growth of total mandibular length is more complex, including differences in velocity and deceleration. Ramus height shows no significant pattern of variation between boys and girls for either size or growth velocity.

Sexual dimorphism

Mandible (arthropod mouthpart)

Variation (astronomy)

10.1002/ajpa.1330710105

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Citations (25)

Section I: The development and etiology of a Class I malocclusion

Peter H. Buschang

Class I molar relationships, also referred to as neutrocclusion, are based on having the mesiobuccal cusps of the maxillary first molars occluding in line with the buccal grooves of the mandibular first molars. Individuals with Class I malocclusion have normal molar relationships, but their teeth are not correctly positioned in the line of occlusion, due to malalignments, rotations, overbites, open bites, posterior crossbites, or anterior crossbites. Maxillary and mandibular malalignments are by far the most prevalent forms of Class I malocclusion. Tooth size arch length discrepancies provides a better measure of crowding than incisor irregularity. Crowding of the deciduous dentition is important because it often produces crowding in the mixed dentition. Crowding is substantially less than incisor liability because the arch form changes during the transition. The crowding that occurs during the early transition is temporary for most children. Supraeruption is a normal compensatory response to offset occlusal attrition and maintain efficient mastication.

Crowding

10.1002/9781119912576.ch5.1

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