An architectural and structural craniofacial analysis: A new lateral cephalometric analysis

Delaire, J; Schendel, Stephen A.; Tulasne, Jean-François

doi:10.1016/0030-4220(81)90252-8

Cited by 134 publications

(54 citation statements)

References 3 publications

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“…The ideal occlusal plane, as proposed by Delaire,7,8 was rarely coincident with the actual occlusal plane in the Class I malocclusion subjects examined in the present study. In fact, for the vast majority of subjects, the actual occlusal plane was below the ideal occlusal plane, this being more pronounced for males than for females.…”

Section: Discussioncontrasting

confidence: 43%

“…Orthodontically untreated individuals show an increase in crowding with age. 21 In addition, crowding may not be related to divergence of the occlusal plane since the occlusal plane defined by Delaire 7,8 passes through the occlusal surfaces of the premolars and is independent of the position of the incisors and canines. For these reasons, and due to the ethical restrictions in obtaining lateral cephalometric radiographs of orthodontically untreated individuals with an ideal occlusion, the present sample can be considered as suitable for the question under investigation.…”

Section: Discussionmentioning

confidence: 99%

“…These were then compared with the ideal maxillary, mandibular, and occlusal planes respectively, as defined by Delaire. 7,8 For each plane, the discrepancy between the actual plane and the ideal plane was measured, to the nearest 0.5 , a positive value indicating that the actual plane was above and a negative value below the ideal plane. The angle of the mandibular plane to the cranial base (Sella-Nasion plane to mandibular plane) and the intermaxillary angle (angle between the maxillary and mandibular planes) were also measured on each lateral cephalometric radiograph in order to establish correlations between these values and the divergence of the abovementioned planes to the ideal planes.…”

Section: Methodsmentioning

confidence: 99%

“…This implies a balance between the maxillary, mandibular, and occlusal planes in relation to the craniospinal articulation and the postero-inferior part of the skull. 8 This proposition by Delaire is, to the best of our knowledge, based on his clinical experience and thus on empirical evidence. There is no clear or available scientific evidence, unless based on unpublished data, which substantiates his propositions.…”

mentioning

confidence: 99%

“…Delaire 7,8 developed a cephalometric analysis, referred to as the architectural and structural craniofacial cephalometric analysis, and discussed its application in the treatment of cranio-maxillo-facial anomalies. This method is often used for orthognathic treatment planning.…”

mentioning

confidence: 99%

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Orientation of the occlusal plane in a Class I adult population

Antonarakis

Kiliaridis

Scolozzi

2013

Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology

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Objective. To primarily evaluate whether Delaire's ideal occlusal plane is present in Class I occlusal relationship adults. Study Design. Pretreatment lateral cephalometric radiographs from 30 orthodontically untreated Caucasian Class I malocclusion adults were obtained. The occlusal, mandibular, and maxillary planes were traced and compared with the ideal occlusal, mandibular, and maxillary planes according to Delaire. Results. The average occlusal plane was 3.5 below the ideal plane. This divergence was more pronounced in males, and in patients presenting with a hypodivergent skeletal pattern. The maxillary plane displayed on average less than 0.5 of divergence to the ideal. The average mandibular plane showed a divergence of 3.3 below the ideal. Conclusions. When aiming to obtain an ideal orientation of the occlusal plane postoperatively, one must keep in mind that in Class I occlusal relationship adults without any dentofacial disharmony, the occlusal plane is rarely coincident with the ideal plane. (Oral Surg Oral Med Oral Pathol Oral Radiol 2013;116:35-40) The orientation of the occlusal plane is often a factor used by maxillofacial surgeons both in predicting optimal functional and esthetic results, and in predicting the stability of a certain operative procedure. [1][2][3] It is thought to be true that if the postoperative occlusal plane is not coincident with the 'ideal' occlusal plane, then the risk for postoperative surgical relapse is increased. For this reason, when performing preoperative surgical planning and perioperative surgical positioning of the jaws, one of the objectives may be to establish the position of the occlusal plane and the jaws in accordance with cephalometric treatment planning. 4,5 This may involve the surgeon performing a rotation of the maxillomandibular complex 6 in order to improve both facial balance and the occlusal plane angle which ultimately is thought to favor occlusal stability.Delaire 7,8 developed a cephalometric analysis, referred to as the architectural and structural craniofacial cephalometric analysis, and discussed its application in the treatment of cranio-maxillo-facial anomalies. This method is often used for orthognathic treatment planning. [9][10][11][12] Delaire proposed that the occlusal plane, stated to pass through the occlusal surfaces of the premolars, in an ideal situation was meant to pass through the inferior part of the skull (a point referred to as the mandibularoccipital point, Om, in the original analysis). Moreover, the occlusal plane, again in an ideal situation, was meant to meet with the maxillary and mandibular planes at this same point (Figure 1). This implies a balance between the maxillary, mandibular, and occlusal planes in relation to the craniospinal articulation and the postero-inferior part of the skull. 8 This proposition by Delaire is, to the best of our knowledge, based on his clinical experience and thus on empirical evidence. There is no clear or available scientific evidence, unless based on unpublished data, which substa...

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Section: Discussioncontrasting

confidence: 43%

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

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Orientation of the occlusal plane in a Class I adult population

Antonarakis

Kiliaridis

Scolozzi

2013

Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology

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Cephalometry and Cephalometric Analysis

Naini¹

2011

Facial Aesthetics

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The Mechanical Significance of the Temporal Fasciae in Macaca fascicularis: An Investigation Using Finite Element Analysis

Curtis

Witzel

Fitton

et al. 2011

The Anatomical Record

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Computational finite element analyses (FEAs) of the skull predict structural deformations under user specified loads and constraints, with results normally presented as stress and strain distributions over the skull's surface. The applied loads are generally a representation of the major adductor musculature, with the skull constrained at bite positions and at the articulating joints. However, virtually all analyses ignore potentially important anatomical structures, such as the fasciae that cover the temporalis muscle and attach onto the zygomatic arch. In vivo experimental studies have shown that removal of the temporal fasciae attachment onto the zygomatic arch in Cebus monkeys results in significant bone adaptation and remodeling in this region, suggesting the fasciae play an important role in stabilising the arch during biting. Here we investigate this potential stabilising role by carrying out FEAs of a macaque skull with and without temporal fasciae included. We explore the extent to which the zygomatic arch might be stabilized during biting by a synchronized tensioning of the temporal fasciae, acting to oppose masseteric contraction forces. According to our models, during temporalis muscle bulging the forces generated within the tensioned temporal fasciae are large enough to oppose the pull of the masseter. Further, a near bendingfree state of equilibrium within the arch can be reached, even under forceful biting. We show that it is possible to eliminate the high strain gradients in and around the zygomatic arch that are present in past computational studies, with strains being more uniform in magnitude than previously thought. Anat Rec, 294:1178Rec, 294: -1190Rec, 294: , 2011. V V C 2011 Wiley-Liss, Inc.

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An architectural and structural craniofacial analysis: A new lateral cephalometric analysis

Cited by 134 publications

References 3 publications

Orientation of the occlusal plane in a Class I adult population

Orientation of the occlusal plane in a Class I adult population

Cephalometry and Cephalometric Analysis

The Mechanical Significance of the Temporal Fasciae in Macaca fascicularis: An Investigation Using Finite Element Analysis

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