Angel Insua1,2, Florencio Monje-Gil3, Lucía García-Caballero4, Jordi Caballé-Serrano5, Hom-Lay Wang6, Alberto Monje6,7,8. 1. Department of Periodontics and Oral Medicine, School of Dentistry, University of Michigan, Ann Arbor, MI, USA. ainsua@umich.edu. 2. Department of Oral Surgery and Oral Medicine, School of Medicine and Dentistry, University of Santiago de Compostela, Entrerrios s/n, 15782, Santiago de Compostela, Spain. ainsua@umich.edu. 3. Department of Oral and Maxillofacial Surgery, Hospital Infanta Cristina, Badajoz, Spain. 4. Medical-Surgical Dentistry Research Group (OMEQUI), Health Research Institute of Santiago de Compostela (IDIS), University of Santiago de Compostela, Santiago de Compostela, Spain. 5. Department of Oral and Maxillofacial Surgery, International University of Catalonia, Barcelona, Spain. 6. Department of Periodontics and Oral Medicine, School of Dentistry, University of Michigan, Ann Arbor, MI, USA. 7. Department of Oral Surgery and Stomatology, ZMK School of Dentistry, Universität Bern, Bern, Switzerland. 8. Department of Periodontology, International University of Catalonia, Barcelona, Spain.
Abstract
OBJECTIVES: It has been speculated that certain Schneiderian membrane thickness (SMT) might be more prone to perforation. This investigation was aimed at studying the mechanical characteristics of the Schneiderian membrane under one- and two-dimensional tests and their correlation to the histological SMT in human samples. MATERIAL AND METHODS: Sixteen Schneiderian membranes were collected from 11 cadaver heads treated with Thiel's embalming method. The samples were processed and analyzed clinically and histologically. One-dimensional maximum elongation until perforation and two-dimensional resistance to ball penetration were performed after the biopsy. Data was analyzed by using the Wilcoxon rank test and the Spearman's rank correlation. RESULTS: The histological SMT was 1.36 ± 0.42 mm, whereas the clinical thickness was 0.27 ± 0.21 mm, yielding statistical significance (p = 0.000). The resistance under ball penetration was 0.59 ± 0.43 N and the mean maximum elongation in the one-dimension test 11.19 ± 7.14 mm. Expressed in percentage, the mean stretch was 241.36 ± 227.97% (range 31.5 up to 947%). A weak positive correlation was found between the ball penetration test and the SMT (r = 0.10, p = 0.711), while a weak negative correlation was found between stretching test and the SMT (r = -0.021, p = 0.94). CONCLUSIONS: Mechanical tests seem to indicate that SMT might not significantly predispose to Schneiderian membrane perforation. Hence, other anatomical and operator's factors should be considered of surpassing importance. CLINICAL RELEVANCE: Thinner SM might be more prone to perforation when detaching it from the maxillary sinus antrum; however, a thick membrane is not prevented to tear, as their resistance under elastic forces is not higher than thinner ones.
OBJECTIVES: It has been speculated that certain Schneiderian membrane thickness (SMT) might be more prone to perforation. This investigation was aimed at studying the mechanical characteristics of the Schneiderian membrane under one- and two-dimensional tests and their correlation to the histological SMT in human samples. MATERIAL AND METHODS: Sixteen Schneiderian membranes were collected from 11 cadaver heads treated with Thiel's embalming method. The samples were processed and analyzed clinically and histologically. One-dimensional maximum elongation until perforation and two-dimensional resistance to ball penetration were performed after the biopsy. Data was analyzed by using the Wilcoxon rank test and the Spearman's rank correlation. RESULTS: The histological SMT was 1.36 ± 0.42 mm, whereas the clinical thickness was 0.27 ± 0.21 mm, yielding statistical significance (p = 0.000). The resistance under ball penetration was 0.59 ± 0.43 N and the mean maximum elongation in the one-dimension test 11.19 ± 7.14 mm. Expressed in percentage, the mean stretch was 241.36 ± 227.97% (range 31.5 up to 947%). A weak positive correlation was found between the ball penetration test and the SMT (r = 0.10, p = 0.711), while a weak negative correlation was found between stretching test and the SMT (r = -0.021, p = 0.94). CONCLUSIONS: Mechanical tests seem to indicate that SMT might not significantly predispose to Schneiderian membrane perforation. Hence, other anatomical and operator's factors should be considered of surpassing importance. CLINICAL RELEVANCE: Thinner SM might be more prone to perforation when detaching it from the maxillary sinus antrum; however, a thick membrane is not prevented to tear, as their resistance under elastic forces is not higher than thinner ones.
Authors: Javier López-Niño; Lucía García-Caballero; Antonio González-Mosquera; Juan Seoane-Romero; Pablo Varela-Centelles; Juan Seoane Journal: J Periodontol Date: 2011-07-01 Impact factor: 6.993
Authors: Angel Insua; Alberto Monje; Istvan Urban; Laura G Kruger; Carlos Garaicoa-Pazmiño; James V Sugai; Hom-Lay Wang Journal: Int J Periodontics Restorative Dent Date: 2017 Nov/Dec Impact factor: 1.840
Authors: Alberto Monje; Istvan A Urban; Richard J Miron; Jordi Caballe-Serrano; Daniel Buser; Hom-Lay Wang Journal: Int J Periodontics Restorative Dent Date: 2017 Sep/Oct Impact factor: 1.840