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At least 19 recordsLinked to original sources
PubMed1979

Secondary unilateral cleft lip repair: combining rotation-advancement principles with a cross-lip muscle-vermilion flap.

Any lip without a complete philtral complex looks unnatural. This important anatomical entity can be recovered in many lips primarily closed with straight-line or Mirault-Blair-Brown-McDowell procedure. In these patients, combining a rotation-advancement upper lip revision with tubercle reconstruction using a cross-lip vermilion-orbicularis oris muscle flap results in a rotation-advancement scar ideally located in the skin of the upper lip and no scar in the skin of the lower lip. The tubercle is reconstructed as a unit from lower lip vermilion and muscle. The scar in the lower lip is restricted to the vermillion and therefore becomes extremely subtle and difficult to detect. The many scars resulting from a standard Abbe flap are avoided. Even patients with lip deformities considered too mild for a standard Abbe flap no longer need be denied lip revision when the cupid's bow is deficient.

Adolescent↗
PubMed1978

Measurement of lip posture and interaction between lip posture and resting face height.

A method for measurement of lip incompetence is described. Electromyographic techniques were used to obtain relaxation of the muscles of the lip and of a jaw elevator muscle. Standardized photographs were taken of the subject's profile, from which lip separation and face height were measured. Variation was found in successive measurements of lip posture, some of which appeared to depend upon mandibular posture. With the teeth in occlusion, lip separation was reduced. Active maintenance of lip contact by the subject was often associated with a reduction in lower face height, which may have been a direct consequence of the lip muscle activity, or of jaw elevator activity facilitating the lip closure.

Adolescent↗
PubMed1977

Secondary lip correction in unilateral cleft lips.

Between 1973 and 1976, we performed 121 secondary corrections of the lip in cleft lip and palate cases; 75 of them were unilateral. Most of the cases were originally operated upon in another unit, usually by the same surgeon using a straight line closure according to Veau (1931). The result was always a short lip at the site of operation. In addition, the typical deformity of the aperture of the nose, with flatness of the ala cartilage, has been frequently observed. Various techniques have been used to correct the secondary deformities of the lip; some were modified by the author. In most cases, the Tennison (1952) technique was used with modification of the Trauner (1966) flap. The results of this technique were compared with those of Millard (1964). Other methods were used in a few cases. The results demonstrate, that by using the rotation advancement technique, better improvement of the nasal aperture will be obtained and the Z-plasty of the lip has the advantage of forming a cupid's bow. The method of lip correction chosen depends upon the nature of the lip deformity.

Cicatrix↗
PubMed1991

Mouthbreathing, lip seal and upper lip coverage and their relationship with gingival inflammation in 11-14 year-old schoolchildren.

The gingival health of 201 schoolchildren aged 11-14 years was assessed at 6 sites on all the incisor and first molar teeth by recording separately the presence or absence of redness and bleeding on probing. Crowding of the incisor teeth was recorded as labio-lingual displacement and mesio-distal overlap. A 2nd examiner recorded the presence or absence of plaque at these sites and assessed mouthbreathing, lipseal and upper lip coverage of the maxillary incisors. Mouthbreathing, increased lip separation and decreased upper lip coverage at rest were all associated with higher levels of plaque and gingival inflammation. Multivariate analysis indicated that this association was statistically significant for mouthbreathing and lip coverage but increased lip separation was not independently related to plaque and gingivitis. The relationship of mouthbreathing and decreased upper lip coverage with gingivitis was most evident in the upper anterior segment and was still evident after covariate analysis to take account of variations due to gender, overcrowding and amount of plaque. However, allowance for these factors also suggested that the influence of mouthbreathing was restricted to palatal sites, whereas lip coverage influenced gingival inflammation at both palatal and labial sites.

Adolescent↗
PubMed1979

The relationship between lip pressure and facial growth after cleft lip repair: an experimental study.

Two different methods of lip repair were used on rabbits with surgically created unilateral clefts of the lip, alveolus, and palate. Control groups involved both unoperated animals and those with unrepaired surgically created clefts. The resulting lip pressure in the rabbits with repaired cleft lips was found to be significantly higher than in the control groups. Direct skull measurements showed that the rabbits whose lips had been surgically repaired also had significantly shorter maxillae that did the control groups. The correlation found between the amount of lip pressure and the degree of growth inhibition indicated a causal relationship.

Animals↗
PubMed1991

The contour lines of the upper lip and a revised method of cleft lip repair.

Many techniques for cleft lip repair have been reported, but these techniques do not consider the contour lines of the upper lip and, in fact, destroy them. The upper lip has complicated contour lines including the vermilion free margin, vermilion border, upper lip horizontal groove (upper lip groove), philtrum (dimple and columns), nostril sills, and nasolabial grooves. Incision lines should be designed so that the postoperative scars do not cross these contour lines. We feel that our incision lines and postoperative scars provide better aesthetic results and diminish hypertrophic scar formation.

Child, Preschool↗
PubMed1991

A technique for measurement of intraoral lip pressures with lip bumper therapy.

One of the reported effects of functional appliance therapy is muscular adaptation achieved through the use of vestibular shields. To develop a method for measuring these effects, 10 children with Class I molar occlusion in the late mixed-dentition stage underwent lip bumper therapy for 8 months. Semiconductor pressure transducers mounted on Tru-Tain stents in the mandibular midline and left canine areas were used to measure lip pressures with the patient at rest and during five functional exercises. Resting and speaking lip pressures for the midline transducer showed significant increases 1 month after lip bumper placement and then decreased to near or below pretreatment levels, possibly an adaptive response. Left-side resting pressures also showed a gradual decrease. In contrast, left-side speaking pressures showed no significant changes over time. The swallowing pressures were not replicable because of excessive background fluctuations. The results of this study indicate that this method has potential for improving clinical diagnosis. The preliminary data also suggest an adaptive response of lip muscles that varies according to anatomic location.

Activator Appliances↗
PubMed1975

[Geographic lip and folded lip. A new association].

In a typical case of geographical lip, the authors discovered the presence of parallel vertical grooves on the mucosal side of the lips and believe these are similar to those observed in folded tongue. They concluded that there is a possible association "geographical lip and folded lip", comparable with the association "geographical tongue and folded tongue". They then carried out a histological study and proposed an etiopathogenic explanation for the folds in the lip in comparison with the fissures of the tongue, dysembryoplasia due to heterotopy of the gustatory or lymphopoietic grooves.

Abnormalities, Multiple↗
PubMed1991

Characterization of lip expression in Salmonella typhimurium: analysis of lip::lac operon fusions.

Strains of Salmonella typhimurium which have an auxotrophic requirement for lipoic acid were isolated by mutagenesis with the transposable element Mu dJ. The chromosomal location of these insertion mutations was determined to be at 14 map units by bacteriophage P22-mediated cotransduction. The lip gene is transcribed in the clockwise direction relative to the S. typhimurium genetic map. Strains with lip::lac operon fusions were used to characterize the transcriptional activity of the lip promoter. Transcription of the lip gene is not regulated by catabolite repression or lipoic acid concentration. The data indicate that the lip gene product is expressed constitutively at a low level.

Amino Acids↗
PubMed1991

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

Upper lip, lower lip, and jaw movements were recorded in five adult speakers for repeated sequences of the utterance [bae] at different speech rates. The results failed to confirm several earlier reports of an invariant upper lip, lower lip, jaw peak velocity sequencing pattern for bilabial closures. While the earlier reported sequence was the most frequent, a wide variety of different sequences was also commonly observed. In addition, significant intersubject differences in sequencing were found. The present results thus do not support the earlier hypothesis that oral closure gestures reflect aspects of a centrally generated pattern of motor output during speech.

Adult↗
PubMed1989

[Van der Woude syndrome (lip pits, cleft lip and cleft palate syndrome)].

Three patients with lip pits among 701 cases (0.43%) with clefts were treated in Beijing Stomatological Hospital in last five years. Genetic analysis of cases in 5 families with Van der Woude syndrome (Lip pits, cleft lip and cleft palate) in China was studied. We report on three unrelated families from the Beijing area, other three families from the Hebei, Heilongjang, Gansu province, in which the autosomal dominant gene for Van der Woude syndrome is segregating. All three or one of the clinical features may occur in an affected individual who carries the gene. Two probands had ankyloglossia. Six members were missing upper lateral incisors. One proband was missing second premolars. Six members were cross-bite. Two probands had congenital fistula of the mouth angle.

Child↗
PubMed1977

The "lip shave" operation for pre-malignant conditions and micro-invasive carcinoma of the lower lip.

The indications for a lip shave operation include actinic cheilitis with dysplasia, carcinoma in situ, or very early carcinoma with micro-invasion. In addition it may be combined with V wedge excision for larger carcinomas. The procedure consists in the excision of the vermilion epithelium with immediate repair of the lip by advancement of a flap of labial mucosa. The functional and cosmetic results of the operation are perfectly acceptable. The incidence of subsequent carcinoma in lips treated this way is very low.

Aged↗
PubMed1976

Applications of the Karapandzic principle of lip reconstruction after excision of lip cancer.

The number and variety of technics available for lip reconstruction has suggested to some authors that no method is ideal. In fact, excellent results can be obtained under proper circumstances by any one of several procedures. The principle of innervated myocutaneous flaps adds yet another tool to the surgeon's armamentarium, but it does not relieve him of the responsibility to select the most appropriate procedure in each case. As Karapandzic has stated (or understated), "This obviously is not a technique suitable for all lip defects, but in selected cases it gives a very satisfactory result."

Carcinoma, Squamous Cell↗
PubMed1990

The Sri Lankan Cleft Lip and Palate Project: the unoperated cleft lip and palate.

Since 1984, the Sri Lankan Cleft Lip and Palate Project has developed a large surgical and research program collecting records on over 500 subjects with unrepaired cleft lip and palate. In addition, 410 operations were performed by Project and will be followed by individual reports on facial growth and morphology, speech, surgical and anesthetic aspects, and the otologic significance of cleft palate in this issue and subsequent ones.

Adolescent↗
PubMed1978

Lip adhesion and its effect on the maxillofacial complex in complete unilateral clefts of the lip and palate.

The use of a lip adhesion as part of the treatment program for wide complete clefts of the lip and palate is gradually being accepted. Heretofore, little mention has been made as to its actual beneficial effects. Since the introduction of this procedure by our Group in 1966, it has been used routinely by us. Its effects on the maxillofacial complex is discussed in detail.

Age Factors↗
PubMed1992

Facial balance in cleft lip and palate. II. Cleft lip and palate and secondary deformities.

The cleft abnormality is the cause of underdevelopment and subsequent loss of function. Primary cleft surgery and surgery to correct the secondary deformities of previous non-functional repair should aim to restore normal anatomy and physiology, with an emphasis on muscle reconstruction of the lip and soft palate if normal facial development is to be encouraged.

Cleft Lip↗