Influence of speaking rate on the upper lip, lower lip, and jaw peak velocity sequencing during bilabial closing movements

1991 ◽  
Vol 89 (2) ◽  
pp. 845-849 ◽  
Author(s):  
Luc F. De Nil ◽  
James H. Abbs
Keyword(s):  
Peak Velocity ◽  
Speaking Rate ◽  
Upper Lip ◽  
Lower Lip

scholarly journals Conservative treatment of a Class I malocclusion with 12 mm overjet, overbite and severe mandibular crowding

2012 ◽  
Vol 17 (5) ◽  
pp. 43-52
Author(s):  
Marcos Alan Vieira Bittencourt ◽  
Arthur Costa Rodrigues Farias ◽  
Marcelo de Castellucci e Barbosa
Keyword(s):  
Class I ◽  
Facial Features ◽  
Conservative Approach ◽  
Upper Lip ◽  
Facial Aesthetics ◽  
Lower Lip ◽  
Angle Class ◽  
Nasolabial Angle ◽  
Lower Arch ◽  
Lower Incisors

INTRODUCTION: A female patient aged 12 years and 2 months had molars and canines in Class II relationship, severe overjet (12 mm), deep overbite (100%), excessive retroclination and extrusion of the lower incisors, upper incisor proclination, with mild midline diastema. Both dental arches appeared constricted and a lower arch discrepancy of less than -6.5 mm. Facially, she had a significant upper incisors display at rest, interposition and eversion of the lower lip, acute nasolabial angle and convex profile. OBJECTIVE: To report a clinical case consisting of Angle Class I malocclusion with deep overbite and overjet in addition to severe crowding treated with a conservative approach. METHODS: Treatment consisted of slight retraction of the upper incisors and intrusion and protrusion of the lower incisors until all crowding was eliminated. RESULTS: Adequate overbite and overjet were achieved while maintaining the Angle Class I canine and molar relationships and coincident midlines. The facial features were improved, with the emergence of a slightly convex profile and lip competence, achieved through a slight retraction of the upper lip and protrusion of the lower lip, while improving the nasolabial and mentolabial sulcus. CONCLUSIONS: This conservative approach with no extractions proved effective and resulted in a significant improvement of the occlusal relationship as well as in the patient's dental and facial aesthetics.

Movements of the Upper and Lower Lips during Speech

1986 ◽  
Vol 29 (3) ◽  
pp. 348-356 ◽  
Author(s):  
John W. Folkins ◽  
Jeanne L. Canty
Keyword(s):  
Strain Gauge ◽  
Organizational Systems ◽  
Upper Lip ◽  
Bite Block ◽  
Lower Lip ◽  
Block Sizes ◽  
Open Position ◽  
Normal Speaking ◽  
Speech Articulators

Inferior-superior displacements of the upper lip, lower lip, and jaw were transduced with a strain-gauge system in 4 normal-speaking adults. Movements of the upper and lower lips were compared across conditions in which the jaw was free to move and when bite blocks were used to fix the jaw at four different vertical positions. As jaw-open position was increased with the bite blocks, it was found that: (a) Positions of both lips changed for bilabial closure, but the closing movements did not usually maintain consistent proportions between lips across different bite-block sizes; (b) although the lips maintained fairly consistent maximum interlabial opening across many conditions, this opening was reduced in the small bite-block conditions; and (c) in a few cases there was an increase in the duration of lip-closing movements, but these were small and inconsistent. The findings are discussed relative to possible organizational systems that would produce the observed interactions among speech articulators.

Lip and Jaw Kinematics in Bilabial Stop Consonant Production

1997 ◽  
Vol 40 (4) ◽  
pp. 877-893 ◽  
Author(s):  
Anders Löfqvist ◽  
Vincent L. Gracco
Keyword(s):  
Control Strategy ◽  
High Velocity ◽  
Stop Consonant ◽  
Movement Variability ◽  
Upper Lip ◽  
Lower Lip ◽  
Vowel Context ◽  
Virtual Target ◽  
Contextual Variability ◽  
Consonant Voicing

This paper reports two experiments, each designed to clarify different aspects of bilabial stop consonant production. The first one examined events during the labial closure using kinematic recordings in combination with records of oral air pressure and force of labial contact. The results of this experiment suggested that the lips were moving at a high velocity when the oral closure occurred. They also indicated mechanical interactions between the lips during the closure, including tissue compression and the lower lip moving the upper lip upward. The second experiment studied patterns of upper and lower lip interactions, movement variability within and across speakers, and the effects on lip and jaw kinematics of stop consonant voicing and vowel context. Again, the results showed that the lips were moving at a high velocity at the onset of the oral closure. No consistent influences of stop consonant voicing were observed on lip and jaw kinematics in five subjects, nor on a derived measure of lip aperture. The overall results are compatible with the hypothesis that one target for the lips in bilabial stop production is a region of negative lip aperture. A negative lip aperture implies that to reach their virtual target, the lips would have to move beyond each other. Such a control strategy would ensure that the lips will form an air tight seal irrespective of any contextual variability in the onset positions of their closing movements.

Articulatory peculiarities of the Baraba-Tatar phoneme о /ʊ̇/ (on MRI data)

2021 ◽  
pp. 191-208
Author(s):  
T. R. Ryzhikova ◽  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Soft Palate ◽  
Full Description ◽  
Resonance Imaging ◽  
Upper Lip ◽  
Acoustic Effect ◽  
Lower Lip ◽  
Vocal System ◽  
Magnetic Resonance Imaging Mri

The paper aims to describe the articulatory traits of the Baraba-Tatar phoneme o /ʊ̇/ by the somatic methods. The method used is magnetic resonance imaging (MRI). Eighteen Barabian tomograms comprising o-type articulation have been described and analyzed according to the technique adopted in the V. M. Nadelyayev’s Laboratory of Experimental-Phonetic Researches (Institute of Philology SB RAS). The text provides only general observations and conclusions, with a full description of all tomograms given in three tables. The experimentalphonetic analysis of the Baraba-Tatar tomograms of the vowel o allowed the author to draw several conclusions. There is a variability of the o-type tunings in Barabian, the most typical being the central-back narrow labialized ejective realization. Though it is very narrow and is phonetically transcribed as /ʊ̇/, it is acoustically perceived as o. While producing the sound o, the oral and pharyngeal cavities become very small, producing the effect of tension. Additional narrowing occurs between the soft palate and the tongue back as well as between the upper teeth and the lower lip, thus preventing the airflow from free release. The lip position is also unusual: instead of protruding forward, the upper lip moves back, tightly covering the upper teeth to produce an interesting acoustic effect. To sum up, further investigation of all vocal system units of Baraba-Tatar is needed to draw ultimate conclusions about the typological belonging of the language under consideration.

Non-syndromic double upper lip with triple frena: cosmetic cheiloplasty

2021 ◽  
Vol 14 (9) ◽  
pp. e243156
Author(s):  
Monika Gupta ◽  
Harshita Vig ◽  
Yajas Kumar ◽  
Aliza Rizvi
Keyword(s):  
Psychological Distress ◽  
Present Article ◽  
Surgical Management ◽  
Surgical Intervention ◽  
The Other ◽  
Upper Lip ◽  
Lower Lip ◽  
Facial Anomaly ◽  
The Aesthetic ◽  
Functional Problems

Double lip or macrocheilitis is a rare facial anomaly, mostly congenital in origin. It commonly involves the upper lip than the lower lip. It may occur in isolation or as part of the Ascher’s syndrome. It results due to deposition of excessive areolar tissue and non-inflammatory hyperplasia of labial mucosa gland of pars villosa. It may be acquired as a result of injury to the lips or lip-biting habit. The double lip becomes conspicuous when the lips are retracted during smiling resulting in the characteristic ‘cupid’s bow’ appearance. This disfigurement can pose aesthetic and functional problems and may result in psychological distress. A surgical intervention is must for restoration of functions and to address the aesthetic concerns. The present article reports a case of non-syndromic double upper lip with triple labial frena and its surgical management with laser on one side and with scalpel on the other side.

A New Distinctive Species of Schizanthus (Solanaceae) and the Reinstatement of Schizanthus fallax

2021 ◽  
Vol 46 (2) ◽  
pp. 456-469
Author(s):  
Nicolás Lavandero ◽  
Javiera Chinga ◽  
Raquel Pinto ◽  
María Fernanda Pérez
Keyword(s):  
Conservation Status ◽  
Corolla Tube ◽  
Morphological Data ◽  
Herbarium Specimens ◽  
Northern Chile ◽  
Upper Lip ◽  
Lower Lip ◽  
Integrative Framework ◽  
Fresh Material ◽  
Rain Events

Abstract— A new Schizanthus species from northern Chile is described and illustrated. Schizanthus nutantiflorus was discovered based on recent collections made during unusual rain events in the Atacama Desert in 2015. The new species is distinguished morphologically from other Schizanthus species from northern Chile by its short corolla tube, with a distinct upper lip arrangement and colour, having the longest lower lip, and downward-facing flowers. Additionally, the reinstatement of Schizanthus fallax is proposed. By using both nDNA and cpDNA, phylogenetic relationships among all species of Schizanthus were investigated. Molecular and field observations, as well as an exhaustive morphological revision of fresh material and herbarium specimens, supports the segregation of Schizanthus with short corolla tubes from northern Chile into three species. We propose that, in order to fully understand both the taxonomy and evolution of Schizanthus, an integrative framework encompassing molecular, ecological, and morphological data should be carried out. Information on distribution, habitat, informal conservation status, as well as taxonomic notes and illustrations are provided. In addition, an updated key for the species of Schizanthus from northern Chile is given.

CORRELATION OF LIP PRINT, RUGAE PATTERN AND ABO BLOOD GROUP AMONG DENTAL STUDENTS FROM HARYANA: A FORENSIC STUDY

2021 ◽  
pp. 18-21
Author(s):  
Renu Rathee ◽  
Anju Devi ◽  
Anjali Narwal ◽  
Mala Kamboj
Keyword(s):  
Blood Group ◽  
Dental Students ◽  
Abo Blood Group ◽  
Type I ◽  
Upper Lip ◽  
Lower Lip ◽  
Palatal Rugae ◽  
Classi Cation ◽  
Cellophane Tape ◽  
Spss Software

Introduction: Lip prints and palatal rugae are highly individualistic and stable structure, resist changes to disease and trauma and stays permanent throughout life. Correlation of lip print, rugae pattern and blood group can contribute to more precise personal identication apart from other conventional methods. Aim: To correlate lip prints and rugae pattern to blood group among dental students from Haryana. Methodology: Total 100 dental students were included in the study and divided into two groups of 50 males and 50 females. Lip prints were recorded using lipstick and cellophane tape, analyzed according to Suzuki and Tsuchiashi's classication. Rugae pattern were recorded using alginate and analyzed on the cast according to Kapali et al classication. Blood group of the same individuals were recorded and correlated. Obtained data was statistically analyzed using SPSS software v 21.0, IBM. Results: Statistically non-signicant difference was found between both male and female in upper lip pattern (p= 0.751) whereas for lower lip statistically signicant difference was found in males (p=0.004) with predominance of type III pattern whereas in females type I, II patterns predominated. For rugae, statistically non-signicant difference was found (p=0.196), in both the groups with predominance of wavy pattern and no difference in the frequencies of each type of blood group in both genders were seen. Conclusion: Rugae pattern was found to be signicantly correlated with blood group, with higher frequency of wavy pattern among dental students from Haryana

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