Influence of maxillary obturator prostheses on facial morphology in patients with unilateral maxillary defects

Hanawa, Sugiko; Kitaoka, Aki; Koyama, Shihoko; Sasaki, Keiichi

doi:10.1016/j.prosdent.2014.06.016

Cited by 19 publications

(12 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…A method of imaging was used on subjects with unilateral maxillary defects in which the facial data was acquired from them either with or without their maxillary prostheses . Facial landmarks were studied, and the authors were able to show that displacement of some points with the obturator in place, such as the lateral and inferior points at the ala of the nose were greater on the defect side compared with the normal side . The study concluded that the maxillary obturator prosthesis changed the facial morphology around the nose, ala, and lip.…”

Section: Discussionmentioning

confidence: 99%

Volume Assessment of the Effect of Obturators on Facial Form Following Surgery for Head and Neck Cancer Using Stereophotogrammetry

Coward

Richards²,

Fenlon

et al. 2019

Journal of Prosthodontics

View full text Add to dashboard Cite

Purpose To determine if stereophotogrammetry could be used to determine the effects of obturators on facial contour in relation to the measurement of facial volumes. Materials and Methods Stereophotogrammetry images were recorded from 20 subjects with and without their obturators in place. These were converted into a stereolithographic format and overlaid. Registrations were made using the tissues on the normal areas of the face. Difference images were created, enabling surface areas and volumes to be calculated. To assess repeatability of measurement, 2 readings were recorded on each of 2 separate registrations. Data analysis between the sets of readings used correlation coefficients and paired t‐tests. Coefficients of repeatability were also calculated. Results A comparison of readings for the surface areas showed the method of measurement was repeatable with no significant differences between the 2 repeated readings for registration 1 (p = 0.977, coefficient of repeatability = 101 mm2), registration 2 (p = 0.085, coefficient of repeatability = 106 mm2), and the mean of the two readings for registration 1 compared with registration 2 (p = 0.355, coefficient of repeatability = 103 mm2). Similar results were found for the volume measurements with no significant differences between the repeated readings for registration 1 (p = 0.862, coefficient of repeatability = 229 mm3), registration 2 (p = 0.200, coefficient of repeatability = 209 mm3), and the mean of the 2 readings for registration 1 compared with those for registration 2 (p = 0.131, coefficient of repeatability 339 mm3). There was a statistically significant range of volumes that appeared to have been restored by the obturators (p < 0.0005). Conclusions Stereophotogrammetry is reliable in assessing the effects of obturators on facial form. In the sample of subjects, obturators generally appeared to be effective in supporting facial tissues following surgical resections of the maxilla and therefore contribute in some degree to the restoration of facial appearance.

show abstract

Section: Discussionmentioning

confidence: 99%

Volume Assessment of the Effect of Obturators on Facial Form Following Surgery for Head and Neck Cancer Using Stereophotogrammetry

Coward

Richards²,

Fenlon

et al. 2019

Journal of Prosthodontics

View full text Add to dashboard Cite

show abstract

“…difficulties represented by differences in the visceral skull structures [1][2][3][4][5][6][7][8][9][10].…”

Section: Craniometric Characteristic Of the Visceral Skull In Adulthoodmentioning

confidence: 99%

Craniometric characteristic of the visceral skull in adulthood

Сазонова¹,

Vovk²,

Vovk³

et al. 2018

Biomed. and Biosoc. Anthrop.

View full text Add to dashboard Cite

In relation with the development of clinical endovasive surgery, neurosurgery, maxillofacial surgery there is an urgent need for their improvement. Recent year's osteological and orthopedic areas of medicine have been rapidly developed; it requires an additional data on the age-related and individual anatomical variability. The purpose of the study -is to establish the range of anatomical variability of facial skull in adulthood taking in account the extreme forms, sizes and relations according to skull shapes. The research was conducted on a study of 100 bone samples of coherent and fragmented skulls from the collections of anatomy department of Kharkiv National Medical University. It was investigated 58 male skulls and 42 female skulls in 25-60 years old age. To establish an individual anatomical variability of the bone structures, was determined a number of main indices using the well-known craniodivider. All calculations performed by computer program "SPSS Statistics 17.0" using the digital standard package of the tables and initial data. It is proved that the highest range of the arithmetic average of zygomatic sizes (zy-zy) related with representatives of brachycephalic type of the skull, in adulthoods with mesocephalic type it decreases, the minimal range has been found in dolichocephalic type of the head and skull. The lower zygomatic diameter -the size between points go-go, also decreases in the arithmetic average from brachycephalic to dolichocephalic types that is associated with the gradual narrowing and lengthening of the visceral skull in adulthood. More stable results were found determining the forehead width (ft-ft). This parameter tends to decrease from brachycephalic to dolichocephalic. More advanced type of facial structure is defined in brachycephalic adulthoods, the narrowed forehead shape related with dolichocephalic type. For modern craniological estimation of the visceral skull, the size n-pr used to calculate special indices. According to our data, in brachycephalic males this parameter varies from 5.0 to 6.9 cm; females -between 4.8-6.6 cm. In representatives of mesocephalic type, the n-pr ranges in 10.0-11.6 cm. In people with dolichocephalic type, this altitude parameter increased in males from 5.7 to 7.9 cm, females -from 5.5 to 7.6 cm. It was also established that Ind1 has a wide range of variability, especially in brachycephalic males -83.50 ± 9.70 and in females -87.00 ±7.80, which includes a variety of visceral skull structure in people of different age. The range of this index in mesocephalic people is less -86.00 ± 3.20 (males) and 85.30 ± 3.40 (females). Accordingly, in dolichocephalic type complete visceral index is observed in range -91.20 ± 4.40 (males) and 91.10 ± 2.90 (females). Thus, it is proved that the specific type of visceral skull -europrosopic is specific for the people of Kharkiv region. It is characterized by increased latitudinal sizes: zy-zy, po-po and go-go, with a slight decrease in altitude parameters of the visceral skull n-gn and n-pr. Depending on the ra...

show abstract

“…The most common approach to the rehabilitation of patients with maxillary defects remains the use of a removable prosthetic as a defect obturator, precisely defined by The Glossary of Prosthodontics Terms as “a prosthesis used to close a congenital or an acquired tissue opening, primarily of the hard palate and/or contiguous alveolar structures” [ 17 , 18 ]. Among all the generally accepted advantages resulting from their use, such as reduction in hospitalization time and cost, the possibility of avoiding or deleting a second surgical procedure for defect closure and the immediate reestablishment of facial morphology and oral functions is of paramount,—not least for the possibility of a simplified clinical examination of the surgical defect to detect clinical signs of malignancy recurrence at an early stage [ 19 , 20 , 21 ].…”

Section: Introductionmentioning

confidence: 99%

Obturator Prosthesis Rehabilitation after Maxillectomy: Functional and Aesthetical Analysis in 25 Patients

Corsalini

Barile

Catapano

et al. 2021

IJERPH

View full text Add to dashboard Cite

The number of patients undergoing a surgical resection of the maxilla for oncological reasons is constantly increasing, the most common complication of which remains the communication between oral and nasal cavities. On the basis of data arising from the literature regarding the treatment options of maxillary oncological post-surgical defects, obturator prosthesis remains the most used worldwide. We studied 25 patients (with at least 1-year follow up) rehabilitated by obturator prosthesis after maxillary resection leading to oro-nasal communication, providing data on the objective/subjective evaluation of such rehabilitation and mastication performance measured by a two-color chewing gum test. The type of defect was classified according to the classification system proposed by Aramany. Among the patients in our study, 72% rated a higher score for either stability and retention than for aesthetic appearance, as confirmed by the Kapur score rated by clinicians. The two-color chewing gum test shows similar results as only one patient had insufficient chewing function. Interestingly, we found no correlation between the masticatory function and residual denture, confirming that the maxillary obturator remains a predictable solution in such patients regardless of the anatomical alterations following surgery.

show abstract

Influence of maxillary obturator prostheses on facial morphology in patients with unilateral maxillary defects

Cited by 19 publications

References 29 publications

Volume Assessment of the Effect of Obturators on Facial Form Following Surgery for Head and Neck Cancer Using Stereophotogrammetry

Volume Assessment of the Effect of Obturators on Facial Form Following Surgery for Head and Neck Cancer Using Stereophotogrammetry

Craniometric characteristic of the visceral skull in adulthood

Obturator Prosthesis Rehabilitation after Maxillectomy: Functional and Aesthetical Analysis in 25 Patients

Contact Info

Product

Resources

About