Linear photogrammetric analysis of the soft tissue facial profile

Fernández-Riveiro, Paula; Suárez-Quintanilla, David; Smyth-Chamosa, Ernesto; Suárez‐Cunqueiro, María Mercedes

doi:10.1067/mod.2002.125236

Cited by 86 publications

(89 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The soft tissue facial profile can be assessed by means of standardized photographic records as well. [18][19][20][21][22][23] This method requires accurate standardization of the photographic setup; only when this is provided can both angular and linear measurements be calculated.…”

Section: Introductionmentioning

confidence: 99%

Lip Posture Following Debonding of Labial Appliances Based on Conventional Profile Photographs

Abed

Har-Zion

Redlich

2009

The Angle Orthodontist

View full text Add to dashboard Cite

Objective: To assess changes in lip posture following debonding of labial appliances on the basis of a new soft tissue analysis performed by computerized tools with the use of conventional nonstandardized profile photographic pictures. Materials and Methods: Profile photographs of 33 patients were taken just before and just after debonding of labial brackets. Pictures were examined twice through custom-made analysis in which Viewbox software was used. The validity of this new analysis was assessed in a preliminary study. A reference line was constructed between the center of the tragus and the outer canthus. The point where this elongated line intersected with the profile was coined nasion-modified and served as the vertex point for angles used to evaluate the prominence of the lips. The final position of the lines was determined when they were tangent to the appropriate landmarks. Analysis of variance (ANOVA) and t-tests for paired differences were used.

show abstract

Section: Introductionmentioning

confidence: 99%

Lip Posture Following Debonding of Labial Appliances Based on Conventional Profile Photographs

Abed

Har-Zion

Redlich

2009

The Angle Orthodontist

View full text Add to dashboard Cite

show abstract

“…[3][4][5] It is not possible to evaluate the soft tissues from the frontal view by using cephalometric radiographs. In addition to cephalometric radiographs, soft tissue evaluation has been carried out by means of different methods such as anthropometry, [6][7][8][9][10] two-or threedimensional photogrammetry, [11][12][13][14][15][16][17][18][19][20][21][22][23] and three-dimensional imaging techniques. 24,25 Among these methods, two-dimensional photogrammetry has the advantage of being a basic, noninvasive, cost-effective, and quick method that requires minimal time and equipment in the assessment of soft tissue.…”

Section: Introductionmentioning

confidence: 99%

Reliability of reference distances used in photogrammetry

Aksu¹,

Kaya²,

Kocadereli³

2010

The Angle Orthodontist

View full text Add to dashboard Cite

Objective: To determine the reliability of the reference distances used for photogrammetric assessment. Materials and Methods: The sample consisted of 100 subjects with mean ages of 22.97 6 2.98 years. Five lateral and four frontal parameters were measured directly on the subjects' faces. For photogrammetric assessment, two reference distances for the profile view and three reference distances for the frontal view were established. Standardized photographs were taken and all the parameters that had been measured directly on the face were measured on the photographs. The reliability of the reference distances was checked by comparing direct and indirect values of the parameters obtained from the subjects' faces and photographs. Repeated measure analysis of variance (ANOVA) and Bland-Altman analyses were used for statistical assessment. Results: For profile measurements, the indirect values measured were statistically different from the direct values except for Sn-Sto in male subjects and Prn-Sn and Sn-Sto in female subjects. The indirect values of Prn-Sn and Sn-Sto were reliable in both sexes. The poorest results were obtained in the indirect values of the N-Sn parameter for female subjects and the Sn-Me parameter for male subjects according to the Sa-Sba reference distance. For frontal measurements, the indirect values were statistically different from the direct values in both sexes except for one in male subjects. The indirect values measured were not statistically different from the direct values for GoGo. The indirect values of Ch-Ch were reliable in male subjects. The poorest results were obtained according to the P-P reference distance. Conclusions: For profile assessment, the T-Ex reference distance was reliable for Prn-Sn and SnSto in both sexes. For frontal assessment, Ex-Ex and En-En reference distances were reliable for Ch-Ch in male subjects. (Angle Orthod. 2010;80:670-677.)

show abstract

“…They pointed out a problem with historical subjects used for the Divine Proportion and also reported that the general public prefers a fuller, more protrusive profile than what the customary cephalometric standards indicate. This study shows that the standards and norms for one population should not always be acceptable for another population and studies of Paula Ferna´ndez-Riveiro 3 shows that there were presence of sexual dimorphism in most parameters of the Labial, Nasal, and Chin areas. There is no study evident in literature which defines the norms or ideal proportions for the Nepalese population, Hence the purpose of this study also was to define the nasal norms for Nepalese females belonging to the three ethnic groups studied.…”

Section: Photographic Evaluationmentioning

confidence: 99%

“…The morphological characteristics of nose are used in diagnosis and treatment planning in orthodontics. Literature evidences on linear and angular soft tissue profile analysis shows ethnic differences [2,3].The nose is considered to contribute to this difference [4,5].Though hard tissue cephalometrics remains the back bone of orthodontic diagnosis and treatment planning, the paradigm shift to soft tissue examination has added a new dimension to orthodontics. The soft tissue of a patient may contribute positively or negatively to facial esthetics.…”

Section: Department Of Orthodontics and Dentofacial Orthopedics Kathmentioning

confidence: 99%

See 1 more Smart Citation

Nose and Nasal Architecture: An ethnic variations

Thapa¹,

Tyagi²,

Shrestha³

et al. 2017

APJHS

View full text Add to dashboard Cite

Objective: The objective of the study undertaken was to evaluate if geometric and mathematical relationship of Nose and Nasal Architecture of female population of three ethnic groups of Nepal . Methods: Sample consisted total of 135 Nepalese females in age group of 18-25 years belonging to three ethnic groups of Nepal . Each group comprised of 45 females. For the study extra oral facial photographs were obtained in Frontal View, Profile View ,Sub MentoVertex View (Basal View). Evaluations were done using the Goode Method and Fomans Method. Results: Nasal Projection in tarai region females had maximum projection of the nose (61% ± 8) followed by Hilly females (60% ± 5.50) and least projection of nose was found in mountainous region females (50% ± 7). Nasal Projection showed no significant difference in hilly and tarai Nepalese females but shows significant difference between hilly and mountainous region and mountainous region and tarai females. Analysis of nasal architecture revels that mountainous region nose were shorter and broader than hilly and tarai region females Conclusions: Evaluation of nasal architecture reveals that shape of nasal dorsum was straight in all three groups of Nepalese females studied. Columella to Lobe relationship showed that Columella was longest in tarai region females followed by hilly region females and shortest in mountainous region females.

show abstract

Linear photogrammetric analysis of the soft tissue facial profile

Cited by 86 publications

References 15 publications

Lip Posture Following Debonding of Labial Appliances Based on Conventional Profile Photographs

Lip Posture Following Debonding of Labial Appliances Based on Conventional Profile Photographs

Reliability of reference distances used in photogrammetry

Nose and Nasal Architecture: An ethnic variations

Contact Info

Product

Resources

About