Relationship of maxillary 3-dimensional posterior occlusal plane to mandibular spatial position and morphology

Coro, Jorge C.; Velásquez, Roberto L; Coro, Ivette Michelle; Wheeler, Timothy T.; McGorray, Susan P.; Sato, Sadao

doi:10.1016/j.ajodo.2015.12.020

Cited by 18 publications

(22 citation statements)

References 20 publications

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“…A two-dimensional lateral cephalometric radiograph will not fully explain the association between occlusal plane, facial skeletal traits, and Angle class. Asymmetric occlusal inclinations might alter the spatial position of the mandible because of transverse forces and resultant mandibular lateral deviation [2]. The 3D issues, the alteration of the occlusal plane angulation for channeling therapeutic goals, and consequences of such alterations on posttreatment stability should be addressed in further studies.…”

Section: Discussionmentioning

confidence: 99%

“…This aspect has not been considered in any study on the inclinations of the bisector occlusal plane, AOP, and POP, nor regarding the question of image quality of lateral cephalometric x-rays when measuring these inclinations. Furthermore, previous studies related AOP and POP to samples showing mandibular retrognathia and prognathia [2, 7, 28] but did not analyze the association of AOP and POP with the Angle classification.…”

Section: Introductionmentioning

confidence: 99%

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Association of anterior and posterior occlusal planes with different Angle and skeletal classes in permanent dentitions

et al. 2018

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ObjectivesMalocclusions affect about two-thirds of the population and orthodontic treatment is justified in 65% of these. However, the associations between anterior and posterior occlusal plane (AOP, POP) inclinations and Angle classification are lacking.Patients and methodsIn a retrospective study, lateral cephalometric radiograph tracings of 230 previously untreated Caucasians, aged 13 to 49 years, yielded inclines of the bisector occlusal plane, AOP, and POP. All inclinations were referenced to the Sella-Nasion line and the Frankfort horizontal and were assigned to the Angle classification as well as skeletal groups (retrognathic, neutral, prognathic). Quantile regressions were calculated.ResultsIn the skeletal groups the angles between Sella-Nasion line and both AOP and POP were significantly different between the groups (p < 0.01), showing steep inclines in skeletal class II and flat inclines in skeletal class III. The angles Frankfort horizontal-to-POP and Frankfort horizontal-to-AOP showed the same trends but only the latter differed significantly between the groups (p = 0.02). Among the Angle groups, AOP inclinations did not differ significantly for both reference planes whereas POP inclinations were significantly different (p = 0.01 to Frankfort horizontal, p = 0.02 to Sella-Nasion). Angle class I patients showed the flattest POP.ConclusionOcclusal plane inclines, measured to Sella-Nasion, were more consistent than those referenced to Frankfort horizontal. Sella-Nasion related anterior and posterior occlusal plane inclinations were steep in skeletal class II and flat in skeletal class III patients over all quantiles. Using the Angle classification, anterior and posterior occlusal plane inclinations did not follow this principle.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Association of anterior and posterior occlusal planes with different Angle and skeletal classes in permanent dentitions

et al. 2018

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“…Mandibular second premolars is one of those permanent teeth with diverse morphological features existing in different population [4,5]. That is why the knowledge of its type is very important from the clinical point of view so that not only it's other variants are identifiedfrom one another but also differentiate it from the second deciduous molar.…”

Section: Discussionmentioning

confidence: 99%

Prevalence of two variants of permanent mandibular second premolars

Priyadharshini¹,

R²

2017

Int j curr adv res

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“…1 The coronal morphological variations can be in the form of extra cusp/cusps, missing cusp/cusps or variations in groove patterns. 2 These structural variations in teeth are the part of dental anthropological system and should be determined in different populations and/or races, as it can be of great help in identifying the age, gender or race of a deceased individual or cultural practices, habits or anomalies prevalent in a population. 1 The developmental, structural and restorative dental work accounts for ante mortem dental records, which can be of significant importance for forensic dentists in identifying victims in mass disasters, like for 2001 world trade center attack and 2004 Phuket tsunami.…”

Section: Introductionmentioning

confidence: 99%

“…It erupts at the age of 11-12 years when its predecessor tooth, deciduous second molar sheds. 2 This tooth, mesially, has a contact with the mandibular first premolar and on the distal aspect with the ORIGINAL ARTICLE permanent mandibular first molar. 4 The second premolar has generally a larger crown, and slightly wider and longer root than the first premolar.…”

Section: Introductionmentioning

confidence: 99%

Frequency of different groove patterns seen on the occlusal surface of mandibular second premolars

Ali¹,

Niazi²,

Saqib³

et al. 2019

JIMDC

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Background: The Mandibular second premolar has commonly three different type traits depending on the occlusal groove patterns. In addition to that they are also recognized on the basis of number of cusps. The objectives of the study were to determine the frequency of different occlusal groove patterns of mandibular second premolars and to acquire base line data for future studies in this population and field of research.Material and Methods: This study was conducted in Islamabad Dental Hospital (IDH), from September 2017 to December 2017. A total of 600 patients (1200 teeth) with fully erupted mandibular second premolars of normal occlusal morphology, in age group of 15 years and above were screened in the Out Patient Department (OPD). Groove patterns on occlusal surfaces and their anatomical variations on both sides i.e. right and left, were observed and noted in a proforma. Data was analyzed using SPSS version 22.Results: Three different patterns of occlusal grooves (Y, U and H) were found in our study population. Y groove pattern was observed in 364 teeth (30.33%), U pattern in 447 teeth (37.25%) and H pattern was noted in 389 (32.41%) teeth. Among males, U pattern was predominant (43.84%) followed by H and then Y pattern. In females, H pattern grooves was found mostly (34.41%), followed by Y and U pattern.Conclusion: The most frequent occlusal groove pattern observed in our population was U followed by H and Y type.

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Relationship of maxillary 3-dimensional posterior occlusal plane to mandibular spatial position and morphology

Cited by 18 publications

References 20 publications

Association of anterior and posterior occlusal planes with different Angle and skeletal classes in permanent dentitions

Association of anterior and posterior occlusal planes with different Angle and skeletal classes in permanent dentitions

Prevalence of two variants of permanent mandibular second premolars

Frequency of different groove patterns seen on the occlusal surface of mandibular second premolars

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