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Article
Clinical determination of the occlusal plane and its relation with orofacial measurements

Authors: Zeina M Ahmad --- Inas A Jawad --- Ahmed A Al–Ali
Journal: Al-Rafidain Dental Journal مجلة الرافدين لطب الأسنان ISSN: 18121217 Year: 2007 Volume: 7 Issue: 9 Pages: 101-110
Publisher: Mosul University جامعة الموصل

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Abstract

Aims: To determine the level and angulation of the occlusal plane of the artificial dental arch by measuring the level and angulation of the occlusal plane of completely dentulous subjects and to find the relation of these measurements to some of the vertical facial and intra oral dimensions. Materials and Methods: The sample of the study consisted from 54 completely dentulous adult subjects (24 female and 30 male) with class 1 normal occlusion aged 19–24 years. Dental casts were taken for each subject, the level and angulation of the occlusal plane, vertical facial, and intra oral dimensions were measured using digital vernier caliper and protractor. The data were analyzed with statistical package for social science program. Results: Sexual differences were found in the intra and extraoral measurements. Most of the measurements dealing with the occlusal plane level and angulation were correlated with each other and with facial measurements. Conclusions: The level and angulation of the occlusal plane of the maxillary and mandibular dental arches as measured on the dental casts are higher in maxilla than in mandible and the intra and extraoral vertical facial measurements are greater in male than female.


Article
Determination of the occlusal plane in completely edentulous patient by computerized cephalometric method (A comparative study). Part I

Authors: Nadira A Hatim --- Inas A Jawad
Journal: Al-Rafidain Dental Journal مجلة الرافدين لطب الأسنان ISSN: 18121217 Year: 2006 Volume: 6 Issue: SpIss Pages: S1-S9
Publisher: Mosul University جامعة الموصل

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Abstract

to determine the validity of the ala–tragus technique in orienting the occlusal plane in complete denture construction for edentulous patients by evaluation of the edentulous patient response. Materials and methods: Twenty edentulous patients were selected according to specific criteria. Sixty sets of complete dentures (three sets for each edentulous patient) with three different occlusal planes parallel to the imaginary line between the inferior border of the ala of the nose, and superior, middle and inferior borders of the tragus were constructed. The grade of participants' response in this research was studied to report the degree of their participation with the occlusal plane of the complete denture they used through answering of Denture Patient Satisfaction Questionnaire (DPSQ) after one month of using each of the three randomly selected complete dentures. Mean and percentage of all the scores (four scores totally satisfied and unsatisfied, fairly satisfied and unsatisfied) were calculated to give an idea about the participants' response. Results: showed greatest participants’ satisfaction (75–90%) were obtained in the complete denture with middle and inferior occlusal planes. Patients satisfaction with denture 2 range between 80–90% regarding speech and chewing ability. Denture 3 (inferior occlusal plane) showed the greatest fairly satisfaction in 60% of patients originated from mandibular denture. Conclusion: most patients were satisfied with the dentures having occlusal plane be oriented parallel to the middle and inferior ala–tragus lines.


Article
Determination of the occlusal plane in completely edentulous patient by computerized cephalometric method (A comparative study). Part II

Authors: Inas A Jawad --- Nadira A Hatim
Journal: Al-Rafidain Dental Journal مجلة الرافدين لطب الأسنان ISSN: 18121217 Year: 2006 Volume: 6 Issue: SpIss Pages: S10-S22
Publisher: Mosul University جامعة الموصل

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Abstract

to investigate the level of ala–tragus line of dentulous nearest to be parallel to the three levels of occlusal plane orientation in the complete denture construction, by evaluation of cephalometric measurements. Designing new special direct and indirect computer digitalization program, to analyze the cephalometric radiographs, or their tracing in the best treatment for edentulous patient. Materials and Methods: Twenty dentate participants in addition to the same group of part I (20 edentulous participants) fulfill specific criteria to investigate the validity of using the ala–tragus line as visible soft tissue guidance in orienting the occlusal plane. Eighty lateral cephalometric radiographs were done (one for each dentate, and three radiographs; one for each set of complete dentures). Special computerized program named CoDiC, which was developed in Matlab and Photoshop programs to analyze digital the colour density of the hard and soft tissue with tracing. Results: showed the occlusal plane of dentulous participants was parallel to ala–tragus line located between the middle and inferior point of the tragus of the ear. This result was coincide with results of occlusal plane orientation of edentulous patient. Computerized digitalization program “CoDiC” was designed and applied for cephalometric tracing and analysis to improve treatment of edentulous participants. Conclusions: There is a strong relationship between the occlusal plane and other craniofacial measurements especially those determinei-ng skeletal jaw relationshipand those determining facial types


Article
Ear lobes as facial landmarks for determining the occlusal plane

Author: Dr. Bayan S. Khalaf, B.D.S. M.Sc.* د.بيان خلف
Journal: MUSTANSIRIA DENTAL JOURNAL مجلة المستنصرية لطب الاسنان ISSN: 18138500 Year: 2008 Volume: 5 Issue: 3 Pages: 270-273
Publisher: Al-Mustansyriah University الجامعة المستنصرية

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Abstract

Aim of the study: The aim of this study was to introduce ear lobes as alternative landmarks for the interpupillary line during orientation of the occlusal plane. Also, the other aim was to compare the ear lobes with the pupils of the eyes to verify that they were indifferent as anatomical landmarks.Method: The alternative landmarks, ear lobes, were presented and the method for orienting the occlusal plane with these landmarks was introduced. Digital pictures of 30 subjects, who participated in the study, were analyzed to compare the parallelism of the interpupillary line with the ear lobes.Results: The results of this study showed that the interpupillary line was parallel with the line drawn between both ear lobes for the same subject.Conclusion: The ear lobes were reliable and dependable alternative landmarks for the orientation of the occlusal plane and could be used with less effort than that of the conventional method utilizing the interpupillary line.

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