Second Premolar Morphologic Trait Similarities in Twins

Wood, Barry F.; Green, Larry J.

doi:10.1177/00220345690480013001

Cited by 41 publications

(14 citation statements)

References 4 publications

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“…Regarding gender difference, male had greater values than female including intercuspal distance, mesiodistal diameter, buccolingual diameter, individual cusp area, and total crown area of first and second premolars. These results were consistent with the previous studies, which showed that mandibular first premolar is smaller than second premolar, because first premolar functions along with the canine, while second premolar supports function of mandibular first molar for efficient occlusion [1,[3][4][5][11][12][13][14]. The measurements of the tooth size in Korean were significantly smaller compared to other races [9,17,18].…”

Section: Discussionsupporting

confidence: 90%

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Occlusal Surface Analysis of Mandibular Premolars in Koreans

Yoo

Park

Kim

2015

Korean J Phys Anthropol

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: The aim of this study was to investigate the characteristics of mandibular premolars regarding size and morphology in Koreans. Moreover, comparisons of gender difference in mandibular premolars were examined to expand anatomical database in Koreans.Data was obtained from students in School of Dentistry, Chonnam National University, Gwangju, Korea. The total number of participants was 66 (33 men and 33 women) and dental casts were fabricated. A total of nine items was investigated using a digital measuring software. Five measurements were performed including intercuspal distance (ID), buccolingual diameter (BL), mesiodistal diameter (MD), total crown area, and each cusp area. One item as each cusp area ratio was calculated, and three items were observed including the number of lingual cusp, occlusal groove patterns, and mesiolingual developmental groove. Comparison measurements were analyzed using paired t-tests, independent t-tests and Pearson correlation tests.Average values in mandibular second premolars were larger than first premolars in most of measurements with a significance with the exception of mesiodistal diameter (p = 0.223). Overall average values were significantly higher in male than in female except intercuspal distance (p = 0.607) and lingual cusp area (p = 0.070) in mandibular premolars. The presence of mesiolingual developmental grooves in the first premolars was 59.1% (male 51.5%, female 66.7%). The most common occlusal groove patterns of the second premolar were a Y pattern, followed in order by H and U patterns.These results provide valuable morphological characteristics of mandibular premolars in Koreans.

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Section: Discussionsupporting

confidence: 90%

“…Although there are many studies regarding tooth morphology from many countries and periods [3][4][5][6][7][8], there is lack of studies on tooth morphology and systematic correlations in Koreans yet. Recent study demonstrated that mandibular molars of Korean have smaller size and more dimorphism than other races [9].…”

Section: Introductionmentioning

confidence: 99%

Occlusal Surface Analysis of Mandibular Premolars in Koreans

Yoo

Park

Kim

2015

Korean J Phys Anthropol

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“…Contra‐lateral human premolars extracted for orthodontic reasons represent an ideal ex vivo set‐up for comparative material analyses, as they are anatomically almost identical (Wood & Green 1969). Consequently, bias caused by differences in root canal anatomy or dentine structure (Vasiliadis et al.…”

Section: Discussionmentioning

confidence: 99%

A comparative study on the disinfection potentials of bioactive glass S53P4 and calcium hydroxide in contra‐lateral human premolars ex vivo

Zehnder

Luder²,

Schätzle

et al. 2006

Int Endodontic J

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“…As noted by Boraas and co-workers (1988), several genetically controlled factors have previously been identified or implicated to be involved in the susceptibility to dental caries-for example, salivary factors and the oral microflora (Mandel, 1974), tooth eruption patterns (Gedda and Brenci, 1966), tooth morphology (Wood and Green, 1969;Konig, 1963), dental arch shape (Kolmakow and Puranen, 1985), and interdental space dimension (Corruccini and Potter, 1980), as well as nutritional factors (Forrai and Bankovi, 1984). All of these factors warrant detailed study in the future, for it is one thing to know that dental caries experience is a heritable characteristic, but quite another to know how/why this is so, i.e., to understand the biologic mechanisms.…”

Section: Future Of Genetic Research In Caries and Periodontologymentioning

confidence: 99%

Genetic Influences in Caries and Periodontal Diseases

Hassell

Harris

1995

Critical Reviews in Oral Biology & Medicine

115

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Deciphering the relative roles of heredity and environmental factors ("nature vs. nurture") in the pathogenesis of dental caries and diseases of the periodontium has occupied clinical and basic researchers for decades. Success in the endeavor has come more easily in the case of caries; the complex interactions that occur between host-response mechanisms and putative microbiologic pathogens in periodontal disease have made elucidation of genetic factors in disease susceptibility more difficult. In addition, during the 30-year period between 1958 and 1987, only meager resources were targeted toward the "nature" side of the nature/nurture dipole in periodontology. In this article, we present a brief history of the development of genetic epistemology, then describe the three main research mechanisms by which questions about the hereditary component of diseases in humans can be addressed. A critical discussion of the evidence for a hereditary component in caries susceptibility is next presented, also from a historical perspective. The evolution of knowledge concerning possible genetic ("endogenous", "idiotypic") factors in the pathogenesis of inflammatory periodontal disease is initiated with an analysis of some foreign-language (primarily German) literature that is likely to be unfamiliar to the reader. We identify a turning point at about 1960, when the periodontal research community turned away from genetics in favor of microbiology research. During the past five years, investigators have re-initiated the search for the hereditary component in susceptibility to common adult periodontal disease; this small but growing body of literature is reviewed. Recent applications of in vitro methods for genetic analyses in periodontal research are presented, with an eye toward a future in which persons who are at risk-genetically predisposed-to periodontal disease may be identified and targeted for interventive strategies. Critical is the realization that genes and environment do not act independently of each other; the appearance or magnitude of heritability may differ with various environments.

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Second Premolar Morphologic Trait Similarities in Twins

Cited by 41 publications

References 4 publications

Occlusal Surface Analysis of Mandibular Premolars in Koreans

Occlusal Surface Analysis of Mandibular Premolars in Koreans

A comparative study on the disinfection potentials of bioactive glass S53P4 and calcium hydroxide in contra‐lateral human premolars ex vivo

Genetic Influences in Caries and Periodontal Diseases

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