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Palatal Lifting Prosthesis and Velopharyngeal Insufficiency: Preliminary Report

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Palatal Lifting Prosthesis and Velopharyngeal Insufficiency: Preliminary Report Clinical science Acta Medica Academica 2013;42(1):55-60 DOI: 10.5644/ama2006-124.71 Palatal lifting prosthesis and velopharyngeal insufficiency: Preliminary report Ali Ibrahim Aboloyoun1, Sahar Ghorab2, Mian Usman Farooq3 1Faculty of Medicine, Assuit University Objectives. Our study aimed to highlight the effectiveness of palatal Egypt lift prosthesis in patients with velopharyngeal insufficiency with previ- 2Faculty of oral and dental medicine ous operated cleft palate. Methods. This study was done undertaken Cairo University, Cairo, Egypt January 2008 to December of 2009 in the Phoniatic unit of Alnoor 3Health Research Department Alnoor Specialist Hospital, Makkah, Saudi Arabia. Ten patients of ≥ 8 years Specialist Hospital, Makkah, Saudi Arabia to ≤ 10 years of age, who had previously undergone surgery for cleft palate, with or without cleft lip, with no other systemic illness and nor- Corresponding author: mal intelligent quotient level, were selected and managed by palatal lift Mian Usman Farooq prosthesis. All the study subjects were subjected to auditory percep- Department of Planning and tual speech evaluation for assessment of the degree of hypernasality, Development compensatory articulator mechanisms, glottal and pharyngeal articu- Directorate General of Health Affairs lation, audible nasal emission, facial grimace and overall intelligibil- P.O. Box 6251 ity of speech. Data were analyzed using SPSS version 16. Results. The 21955 Makkah, Saudi Arabia study included 10 subjects whose mean ± standard deviation of age [email protected] was (8.9±0.9). On auditory speech perceptual evaluation after pros- Tel.: + 966 568 232502 thesis application, significant improvement was found in glottal ar- Fax.: + 966 2 5665000 ticulation 6 (85.7%), p=0.04, facial grimace 6 (85.7%) p=0.04, hyper nasality 10 (10%) p=0.008, and speech intelligibility 9 (90%) p=0.008. Received: 17 December 2012 Conclusion. Young patients with repaired palatal cleft have significant Accepted: 2 April 2013 improvement after application of palatal lift prosthesis. Copyright © 2013 by Academy of Sciences and Arts Key words: Velopharyngeal insufficiency, Cleft palate, Cleft palate of Bosnia and Herzegovina. prosthesis. E-mail for permission to publish: [email protected] Introduction to neuromuscular problems, e.g., those ob- served in velocardiofacial (VCF) syndrome. Velopharyngeal closure (VPC) is an impor- Overt cleft palate, either before or after re- tant part of speech. The causes of hyper- pair, is by far the most common cause of nasality and velopharyngeal dysfunction (VPD), i.e., velopharyngeal insufficiency VPD. This condition occurs in approxi- (VPI) and velopharyngeal incompetence, mately 1 of 2,000 live births. VPD has been are many and range from structural causes reported in as many as 30-50% of patients with the velum, e.g., submucous cleft pal- following palate repair (1). ate, short velum relative to the depth of the Orofacial clefts have an approximate posterior pharyngeal wall, overt cleft palate, rate of 1:500-1:550 births. In a large popu- 55 Acta Medica Academica 2013;42:55-60 lation-based study of 4,433 children born adequate closure, acting as positioning de- with orofacial cleft, the birth prevalence vice. Comprehensive management for these of nonsyndromic cleft lip, with or without patients requires close interaction between cleft palate, was 0.77 per 1,000 births (cleft the prosthodontist and the speech language lip, 0.29/1,000; cleft palate, 0.48/1,000) and therapist, to achieve the maximum benefit the prevalence of nonsyndromic cleft pal- from the palatal lift prosthesis. Fluorosco- ate was 0.31 per 1,000 births. Children with py and nasoendoscopy must be used in the orofacial cleft require surgical procedures design, placement and modification of the and complex medical treatments (2). The prosthesis, which provides a profound tool data from the gulf region is deficient, but for diagnosis, the treatment plan and assess- according to one systemic review of studies, ment of prognosis (10). in Saudi Arabia it ranged from 0.3-2.19 per Our study aimed to highlight the effec- 1,000 live births, in Oman1.5 per 1,000 live tiveness of palatal lift prosthesis in patients births, in Dubai, UAE 0.5 per 1,000 live and with velopharyngeal insufficiency who had still births, while in Amman, Jordan 1.39- previously undergone surgery for cleft pal- 2.4 per 1,000 live births (3). ate, in order to measure the improvement of The end result is the passage of air into VPI. the nose during speech. In speech produc- tion, the audibility of air through the nose Methods is termed as nasal escape, and the resulting speech is termed hypernasal or rhinola- This self controlled sequential experimental lia aperta (4). Severe VPI will often lead to study was undertaken from January 2008 compensatory speech behaviors, resulting to December 2009, in the Phoniatic unit of in poor speech intelligibility (5). Diagnosis Alnoor Specialist Hospital, Makkah, Saudi of VPI is made through taking a history and Arabia. Ten children aged 8 to 10 years, who physical examination, perceptual speech as- had previously undergone surgery for cleft sessment, nasoendoscopy and radiographic palate, with or without a cleft lip, no other multiplanar videofluoroscopy (6). The use systemic illness and normal intelligent quo- of prosthetic devices for correction of ve- tient level, were selected as study subjects. lopharyngeal insufficiency is an alternative Before the final selection of cases, the mouth treatment for patients with conditions that mirror test was performed to decide if the preclude surgery, and for those with hypo case was a candidate for a palatal lift appli- functional velopharynx. Prosthetic manage- ance or not. ment requires close cooperation between the prosthodontist and a phoniatrician Palatal lift prosthesis was placed in the (speech pathologist) (7, 8). following steps Surgical repair of a cleft palate is per- formed by one year of age, in order to Primary alginate impressions were under- minimize speech articulation abnormali- taken and poured into a study cast, followed ties. However, children develop VPI after by a primary survey. The upper first and cleft palate repair require active interven- second deciduous molars or second decidu- tion, i.e., speech therapy, prosthetic man- ous molar and first permanent molar were agement and/or surgery (9). Palatal lifts prepared to receive casted bands, followed were used when adequate palatal length by secondary rubber-based impressions exists, and they physically reduce the dis- poured into master casts, which received tance the palate must traverse to produce alterations. The master cast was duplicated 56 Ali Ibrahim Aboloyoun et al.: Palatal lifting prosthesis and velopharyngeal insufficiency in the investment cast and then a wax pat- Patients were evaluated pre-intervention tern was made, spewed and cast. A metal and immediately post insertion, and given skeleton was tried out the patient’s mouth appointments for re-evaluation after 48- for metal adjustment, after finishing and 72 hours of appliance application. The fi- polishing. An impression of the oro-pha- nal data of re-evaluation considered in this ryngeal border was then taken using a green study was collected after an adaptation pe- stick compound for border molding and a riod of about two months of appliance inser- rubber-base as the impression material, on tion. All the study subjects were subjected the posterior border of the chrome-cobalt to auditory perceptual speech evaluation, skeleton. It was then converted into acrylic for assessment of the degree of hypernasal- resin, followed by a trial seating in the pa- ity, compensatory articulatory mechanisms, tient’s mouth. The final functional impres- glottal and pharyngeal articulation, audible sion was completed using a resilient liner in nasal emission, facial grimace and overall order to elevate the soft palate and cement intelligibility of speech. Two simple clini- the appliance using bands and resin cement. cal tests were undertaken for patients i.e., The patient was given a follow-up appoint- Gutzman’s (A/I) test and Czermak’s (cold ment with instructions for proper oral hy- mirror) test. Videonasoendoscopic evalua- giene measurements. Figure 1-3 tion was performed for patients using a fi- ber optic nasofibroscope coupled with high intensity light and recorded using digital Atmos system. Topical anesthetic gel was applied to the nasofibrolaryngoscope before insertion through the nasal cavity, to reach superior to the velopharyngeal port in order Cleft palate to assess movement of the velum, and the lateral and the posterior pharyngeal walls were observed while the patient repeated an oral speech sample, loaded with phonemes, which needed increased oral airflow (plo- sives and fricatives). Videoendoscopy offers the advantage of a lack of ionizing radiation Figure 1 Case before appliance construction. in videofluroscopy and the ability to help in Palatal Lift Prosthesis Prepared Palatal Lift Prosthesis Figure 2 The finished palatal lift before relining. Figure 3 Palatal lift appliance in the patient’s mouth. 57 Acta Medica Academica 2013;42:55-60 assessment of all structures at the same time By auditory speech perceptual evaluation (11). We classified improvement in clini- before the application of appliance, abnor- cal features when they became absent after mal pharyngeal articulation and audible na- appliance application, except nasality and sal emission was positive in 6 (60%) subjects speech intelligibility, where we differentiat- while facial grimace and abnormal glottal ed it according to the decrease in the sever- articulation was positive in 7 (70%) sub- ity of features i.e., from severe to moderate, jects. Following application of the appliance moderate to mild and mild to absent. and intensive speech therapy for 3-6 months Written informed consent was taken for each case, it was found that: 6 (85.7%) from all the subjects’ guardians, and hospital subjects improved their glottal articulation research committee endorsement was given (p=0.04) and 6 (85.7%) had facial grimace for this research.
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