1
|
Sennimalai K, Mohaideen K, Selvaraj M, Siddiqui HP, Kharbanda OP, Katyal S. Cephalometric Parameters as Predictive Factors for Orthognathic Surgery in Unilateral Cleft Lip and Palate Patients: A Systematic Review and Meta-Analysis. Cleft Palate Craniofac J 2025:10556656251316967. [PMID: 39905887 DOI: 10.1177/10556656251316967] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2025] Open
Abstract
To identify cephalometric parameters that could predict future need for orthognathic surgery (OGS) in patients with unilateral cleft lip and palate (UCLP). Final search was conducted on July 7, 2024, across PubMed, Scopus, Embase, Web of Science, Cochrane, Ovid Medline, EBSCO, and LILACS, without any language and publication time restriction. Studies comparing surgical versus nonsurgical UCLP patients were included. Two independent reviewers screened studies, and those included were evaluated using Quality in Prognostic Studies (QUIPS) tool. Random-effects meta-analysis of various sagittal and vertical cephalometric parameters (SNA, SNB, ANB, mandibular plane angle [MPA], and lower anterior face height [%LFH]) was performed. Ten studies were included in systematic review and 5 in meta-analysis. Quality in Prognostic Studies tool assessment indicated moderate risk in 6 studies, with 2 demonstrating high and low risks of bias. Meta-analysis revealed that in the 5- to 8-year age group, significant differences were observed in SNA and ANB angles between surgical and nonsurgical groups, with mean differences of 2.25° (95% confidence interval [CI] = 1.12, 3.39) and 3° (95% CI = 1.86, 4.15), respectively. In 9- to 14-year age group, significant differences were found in all 3 sagittal parameters: SNA angle difference of 2.65° (95% CI = 1.44, 3.86), SNB angle difference of 3.23° (95% CI = -4.69, -1.77), and ANB angle difference of 5.54° (95% CI = 3.66, 7.42). Vertical parameters (MPA and %LFH) were not statistically significant between groups in any age group. Cephalometric parameters could be a valuable predictive factor for determining the future need for OGS in patients with UCLP. ANB angle has been shown to be a significant predictor for distinguishing between surgical and nonsurgical patients.
Collapse
Affiliation(s)
- Karthik Sennimalai
- Department of Orthodontics, All India Institute of Medical Sciences, Vijaypur, India
| | - Kaja Mohaideen
- Department of Research Analytics, Saveetha Dental College and Hospital, Chennai, India
| | - Madhanraj Selvaraj
- Division of Orthodontics and Dentofacial Orthopedics, Department of Dentistry, Jawaharlal Institute of Postgraduate Medical Education and Research, Puducherry, India
| | | | | | - Sakshi Katyal
- Department of Dentistry, All India Institute of Medical Sciences, Bibinagar, Telangana, India
| |
Collapse
|
2
|
Podleśny M, Ylikontiola L, K Sándor G, Vuollo V, Harila V. Need for orthognathic surgery in cleft patients from Northern Finland. Acta Odontol Scand 2024; 83:140-143. [PMID: 38605577 PMCID: PMC11302477 DOI: 10.2340/aos.v83.40338] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Accepted: 02/26/2024] [Indexed: 04/13/2024]
Abstract
OBJECTIVE Northern Finland has a unique distribution of clefts compared to the rest of Europe and Finland. This may reflect the need for orthognathic surgery among Northern Finland's patient pool. The aim of this study was to compare previously operated patients aged 18 years or older with cleft lip, cleft lip and alveolus, cleft lip and palate, cleft palate and to evaluate the need for orthognathic surgery in order to achieve a stable and functional occlusion. Materials and methods: The study group consisted of all 18-years-old cleft patients treated in the Oulu Cleft Center. The total amount of patients was 110. The patients were compared retrospectively using patients' hospital records. The majority of patients did not have any cleft-associated syndrome. The need for maxillary or bimaxillary orthognathic or corrective-jaw surgery was evaluated by the Oulu Cleft Team. A descriptive and statistical analysis was used to determine the need for orthognathic surgery according to sex and cleft type. RESULTS There were nineteen patients of the total of 110 patients who met the criteria requiring corrective-jaw surgery (17,3%). In total 12 males (25,0%) and 7 females (11,3%) were evaluated for the need of orthognathic surgery. Sixteen of the 19 patients had palatal involvement of the cleft. CONCLUSIONS The need for orthognathic surgery was greater in the cleft lip palate and cleft palate patient groups compared to cleft lip alveolus or cleft lip groups. This study also found that males from Northern Finland need surgery more often than females.
Collapse
Affiliation(s)
- Mateusz Podleśny
- Research Unit of Population Health, Faculty of Medicine, University of Oulu, Finland; Oral and Maxillofacial Surgeon, Oulu University Hospital, Finland. Medical Research Center Oulu, Oulu, Finland.
| | - Leena Ylikontiola
- Research Unit of Population Health, Faculty of Medicine, University of Oulu, Finland; Oral and Maxillofacial Surgeon, Oulu University Hospital, Finland. Medical Research Center Oulu, Oulu, Finland
| | - George K Sándor
- Oral and Maxillofacial Surgeon, Plastic Surgeon, Oulu University Hospital, Finland; Medical Research Center Oulu, Oulu University Hospital, Oulu, Finland
| | - Ville Vuollo
- Medical Research Center Oulu, Oulu University Hospital, Oulu, Finland
| | - Virpi Harila
- Medical Research Center Oulu, Oulu University Hospital, Oulu, Finland; Orthodontist, Oulu University Hospital, Oulu, Finland
| |
Collapse
|
3
|
Al-Dourobi K, Mermod T, Doan MT, Herzog G, Broome M, El Ezzi O, de Buys Roessingh A. What We Learned from Performing the Inverse Malek Procedure to Repair Bilateral Cleft Lips and Palates: A Single-Center Retrospective Study. J Clin Med 2024; 13:1939. [PMID: 38610704 PMCID: PMC11012878 DOI: 10.3390/jcm13071939] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2024] [Revised: 03/16/2024] [Accepted: 03/24/2024] [Indexed: 04/14/2024] Open
Abstract
Background: This study reviews the surgical and functional outcomes of children diagnosed with a bilateral cleft lip and palate and treated by the same surgical team following specific surgical protocols 18 years after surgery and during the follow-up. Methods: Based on a single-center retrospective design, demographic and surgical data were gathered by the authors from international institutions. Most of the data were quantitative in nature, and descriptive statistical and non-parametric tests were employed for analysis. All children born with a bilateral cleft from 1982 to 2002 were considered. Children affected by a syndrome were excluded. Complications and speech results were the main items measured. Results: Thirty patients were selected; 73.3% were treated using the inverse Malek procedure, and 26.7% underwent a modified two-stage procedure. Seventy percent developed an oronasal fistula. An alveolar bone graft was performed in 83%, and 53.3% underwent Le Fort osteotomy. Thirty-six percent required a pharyngeal flap, with good speech results. The median number of times general anesthesia was used among all the interventions considered was 5.5 (4.25-6). Conclusions: This study presents the long-term results of using the inverse Malek procedure to treat children with a bilateral cleft lip and palate. It is shown that this is related to a high risk of developing a fistula, but has good long-term speech results.
Collapse
Affiliation(s)
- Karim Al-Dourobi
- Plastic, Reconstructive and Hand Surgery Service, Lausanne University Hospital, University of Lausanne, CH-1011 Lausanne, Switzerland; (K.A.-D.)
| | - Tessa Mermod
- Plastic, Reconstructive and Hand Surgery Service, Lausanne University Hospital, University of Lausanne, CH-1011 Lausanne, Switzerland; (K.A.-D.)
| | - Marie-Thérèse Doan
- Children and Adolescent Surgery Department, Multidisciplinary Consultations of Facial Cleft, Lausanne University Hospital, University of Lausanne, CH-1011 Lausanne, Switzerland (G.H.)
| | - Georges Herzog
- Children and Adolescent Surgery Department, Multidisciplinary Consultations of Facial Cleft, Lausanne University Hospital, University of Lausanne, CH-1011 Lausanne, Switzerland (G.H.)
| | - Martin Broome
- Children and Adolescent Surgery Department, Multidisciplinary Consultations of Facial Cleft, Lausanne University Hospital, University of Lausanne, CH-1011 Lausanne, Switzerland (G.H.)
| | - Oumama El Ezzi
- Children and Adolescent Surgery Department, Multidisciplinary Consultations of Facial Cleft, Lausanne University Hospital, University of Lausanne, CH-1011 Lausanne, Switzerland (G.H.)
| | - Anthony de Buys Roessingh
- Children and Adolescent Surgery Department, Multidisciplinary Consultations of Facial Cleft, Lausanne University Hospital, University of Lausanne, CH-1011 Lausanne, Switzerland (G.H.)
| |
Collapse
|
4
|
Kauffmann P, Kolle J, Quast A, Wolfer S, Schminke B, Meyer-Marcotty P, Schliephake H. Two-stage palatal repair in non-syndromic CLP patients using anterior to posterior closure is associated with minimal need for secondary palatal surgery. Head Face Med 2024; 20:18. [PMID: 38461271 PMCID: PMC10924352 DOI: 10.1186/s13005-024-00418-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Accepted: 02/16/2024] [Indexed: 03/11/2024] Open
Abstract
OBJECTIVE The aim of the present study was to assess the need for secondary palatal corrective surgery in a concept of palate repair that uses a protocol of anterior to posterior closure of primary palate, hard palate and soft palate. METHODS A data base of patients primarily operated between 2001 and 2021 at the Craniofacial and Cleft Care Center of the University Goettingen was evaluated. Cleft lips had been repaired using Tennison Randall and Veau-Cronin procedures in conjunction with alveolar cleft repair. Cleft palate repair in CLP patients was accomplished in two steps with repair of primary palate and hard palate first using vomer flaps at the age of 10-12 months and subsequent soft palate closure using Veau/two-flap procedures 3 months later. Isolated cleft palate repair was performed in a one-stage operation using Veau/two-flap procedures. Data on age, sex, type of cleft, date and type of surgery, occurrence and location of oronasal fistulae, date and type of secondary surgery performed for correction of oronasal fistula (ONF)and / or Velophyaryngeal Insufficiency (VPI) were extracted. The rate of skeletal corrective surgery was registered as a proxy for surgery induced facial growth disturbance. RESULTS In the 195 patients with non-syndromic complete CLP evaluated, a total number of 446 operations had been performed for repair of alveolar cleft and cleft palate repair (Veau I through IV). In 1 patient (0,5%), an ONF occurred requiring secondary repair. Moreover, secondary surgery for correction of VPI was required in 1 patient (0,5%) resulting in an overall rate of 1% of secondary palatal surgery. Skeletal corrective surgery was indicated in 6 patients (19,3%) with complete CLP in the age group of 15 - 22 years (n = 31). CONCLUSIONS The presented data have shown that two-step sequential cleft palate closure of primary palate and hard palate first followed by soft palate closure has been associated with minimal rate of secondary corrective surgery for ONF and VPI at a relatively low need for surgical skeletal correction.
Collapse
Affiliation(s)
- Philipp Kauffmann
- Department of Oral and Maxillofacial Surgery, University Medical Center Goettingen, Goettingen, Germany.
- Georg-August-University Goettingen, Robert-Koch-Straße 40, Goettingen, 37099, Germany.
| | - Johanna Kolle
- Department of Oral and Maxillofacial Surgery, University Medical Center Goettingen, Goettingen, Germany
| | - Anja Quast
- Department of Orthodontics, University Medical Center Goettingen, Goettingen, Germany
| | - Susanne Wolfer
- Department of Oral and Maxillofacial Surgery, University Medical Center Goettingen, Goettingen, Germany
| | - Boris Schminke
- Department of Oral and Maxillofacial Surgery, University Medical Center Goettingen, Goettingen, Germany
| | | | - Henning Schliephake
- Department of Oral and Maxillofacial Surgery, University Medical Center Goettingen, Goettingen, Germany
| |
Collapse
|
5
|
de Buys Roessingh A, Robert Y, Despars J, Zbinden-Trichet C, Herzog G, Broome M, El Ezzi O. Unilateral Cleft lip and Palate: Long-Term Results of the Malek Technique. Cleft Palate Craniofac J 2024; 61:219-230. [PMID: 36453758 PMCID: PMC10751977 DOI: 10.1177/10556656221139671] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2023] Open
Abstract
To review at 18 years-old the results of surgery and follow-up of children born in our hospital with unilateral cleft lip and palate (uCLP). They were operated at the time by the same surgeon, following the same primary surgical procedure (Malek). Retrospective cohort study. Tertiary Children's Hospital. All children born with uCLP between 1996 and 2001 and operated in our hospital. Syndromic children were excluded. Results of the primary surgery, ear-nose-throat interventions, maxillo-facial surgery and final phonatory results. Seventy-nine files of children born with a cleft were reviewed: 34 were taken into consideration for uCLP: 15 right and 19 left. They were operated in two stages, following the inverse Malek procedure. Sixty per cent had a fistula. Eighty-eight percent had grommets. Ninety-seven percent had an alveolar graft at a median age of nine (5-10) and 22% underwent a Le Fort osteotomy. Seven percent were operated for a pharyngeal flap, 29% for a secondary lip surgery at a mean age of 12.8 and 29% for a late rhinoplasty at a mean age of 14.8 years. A median of 5.7 multidisciplinary consultations was realized with a median number of general anesthesia of 7.1 (4-13). This retrospective study shows that the Malek procedure for children born with uCLP is related to a high risk of fistula but good long-term phonatory results. Twenty percent of children were operated for a Le Fort procedure and one-third for a secondary lip procedure and rhinoplasty.
Collapse
Affiliation(s)
- Anthony de Buys Roessingh
- Department of Pediatric Surgery, University Hospital Center of the Canton of Vaud (CHUV), Lausanne, Switzerland
| | - Yohann Robert
- Multidisciplinary consultations of facial cleft, CHUV, Lausanne, Switzerland
| | - Josée Despars
- Department of Pediatric Surgery, University Hospital Center of the Canton of Vaud (CHUV), Lausanne, Switzerland
| | - Chantal Zbinden-Trichet
- Department of Pediatric Surgery, University Hospital Center of the Canton of Vaud (CHUV), Lausanne, Switzerland
| | - Georges Herzog
- Department of Pediatric Surgery, University Hospital Center of the Canton of Vaud (CHUV), Lausanne, Switzerland
| | - Martin Broome
- Department of Pediatric Surgery, University Hospital Center of the Canton of Vaud (CHUV), Lausanne, Switzerland
| | - Oumama El Ezzi
- Department of Pediatric Surgery, University Hospital Center of the Canton of Vaud (CHUV), Lausanne, Switzerland
| |
Collapse
|
6
|
Patil S, Basavaraddi SM, Revankar AV, Naik RD, Desai A, Kumar N, Naik B. Comparative Evaluation of Relapse After LeFort 1 Osteotomy in Cleft Palate and Non-cleft Individuals: A Longitudinal Study. Cureus 2024; 16:e52298. [PMID: 38357082 PMCID: PMC10865924 DOI: 10.7759/cureus.52298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/13/2024] [Indexed: 02/16/2024] Open
Abstract
PURPOSE The aim of this study was to assess and compare the likelihood of relapse one year after LeFort I advancement surgery in patients with and without cleft lip and palate. METHODS A retrospective observational study which included two groups of participants who underwent LeFort I maxillary advancement was performed. Group 1 included 10 non-cleft subjects and Group 2 included 21 subjects with cleft palate. These maxillary deficient patients were chosen and operated using a technique where only a sagittal displacement was intended. Patients who underwent additional mandibular surgery, significant vertical or transverse alterations, or both were excluded. Pre-operative (T1), immediately post-operative (T2), and minimum one-year follow-up (T3) lateral cephalograms were studied for each group. Skeletal stability and dental stability after LeFort I surgery at a minimum of one-year follow-up in cleft palate and non-cleft patients were evaluated. RESULTS For the given sample size, relapse tendencies showed statistically significant differences between cleft palate patients and non-cleft palate patients after maxillary advancement. The sella nasion angle and horizontal overlap of the maxillary and mandibular incisors (overjet) decreased by 2 degrees and 0.9 mm respectively in the cleft palate group while decreasing by 1.10 degrees and 0.40 mm in the non-cleft group. CONCLUSIONS After maxillary advancement with LeFort I osteotomy and miniplate fixation in patients with cleft palate and non-cleft patients, some degree of relapse was detected in both groups for the given sample size after one year post-operatively. The cleft palate group displayed additional relapse tendencies when compared to the non-cleft group.
Collapse
Affiliation(s)
- Shruti Patil
- Department of Orthodontics and Dentofacial Orthopedics, Shri Dharmasthala Manjunatheshwara (SDM) College of Dental Sciences and Hospital, A Constituent Unit of Shri Dharmasthala Manjunatheshwara University, Dharwad, IND
| | - Shrinivas M Basavaraddi
- Department of Orthodontics and Dentofacial Orthopedics, Shri Dharmasthala Manjunatheshwara (SDM) College of Dental Sciences and Hospital, A Constituent Unit of Shri Dharmasthala Manjunatheshwara University, Dharwad, IND
| | - Ameet V Revankar
- Department of Orthodontics and Dentofacial Orthopedics, Shri Dharmasthala Manjunatheshwara (SDM) College of Dental Sciences and Hospital, A Constituent Unit of Shri Dharmasthala Manjunatheshwara University, Dharwad, IND
| | - Roopak D Naik
- Department of Orthodontics and Dentofacial Orthopedics, Shri Dharmasthala Manjunatheshwara (SDM) College of Dental Sciences and Hospital, A Constituent Unit of Shri Dharmasthala Manjunatheshwara University, Dharwad, IND
| | - Anil Desai
- Department of Oral and Maxillofacial Surgery, Shri Dharmasthala Manjunatheshwara (SDM) College of Dental Sciences and Hospital, A Constituent Unit of Shri Dharmasthala Manjunatheshwara University, Dharwad, IND
| | - Niranjan Kumar
- Department of Plastic Surgery, Shri Dharmasthala Manjunatheshwara (SDM) College of Medical Sciences and Hospital, A Constituent Unit of Shri Dharmasthala Manjunatheshwara University, Dharwad, IND
| | - Balaram Naik
- Department of Conservative Dentistry and Endodontics, Shri Dharmasthala Manjunatheshwara (SDM) College of Dental sciences and Hospital, A Constituent Unit of Shri Dharmasthala Manjunatheshwara University, Dharwad, IND
| |
Collapse
|
7
|
Mafféïs J, Odri GA, Mercier JM, Loin J, Perrin JP, Joly A, Letelier C, Corre P, Bertin H. Stability of Le Fort 1 osteotomy in patients with bilateral cleft lip and palate: A retrospective study of 71 patients. J Craniomaxillofac Surg 2023; 51:407-415. [PMID: 37550117 DOI: 10.1016/j.jcms.2023.06.011] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Revised: 04/13/2023] [Accepted: 06/25/2023] [Indexed: 08/09/2023] Open
Abstract
The aim of this study was to evaluate the sagittal and vertical relapses after Le Fort 1 osteotomy in bilateral cleft lip and palate (BCLP) patients. Lateral cephalograms before surgery, immediately after the procedure, at one year, and at least two years (when available) after surgery were superimposed. The positions of five landmarks were studied in a coordinate system. Uni- and multivariate analyses investigated the effect of various factors on the relapse. Of the 71 patients included for a BCLP, 54 presented complete data at one year, and 30 patients were included for the long follow-up study (mean of 55 months). The mean maxillary advancement was 6.2 mm on the sub-spinal point (A). Sagittal relapse occurred at one year (mean of 1.1 mm on point A, 0.7 mm on point prosthion (P); p < 0.0001) and progressed by 0.5 mm and 1.0 mm, respectively, on the same points at the last follow-up. The mean vertical relapse was 0.5 mm on point A (p = 0.044), 0.6 mm on point P (p = 0.16) and 0.5 mm on incisor (I) (p = 0.056). The vertical relapse was correlated to the degree of vertical movement. Three factors were associated to the recurrence including a prior pharyngeal flap, an associated mandibular osteotomy and smoking habits.
Collapse
Affiliation(s)
- Julia Mafféïs
- Nantes Université, CHU Nantes, Service de chirurgie maxillo-faciale et stomatologie, F-44000, Nantes, France.
| | - Guillaume Anthony Odri
- Service de chirurgie Orthopédique, Hôpital Lariboisière, Assistance Publique-Hôpitaux de Paris, 4, rue Ambroise-Paré, 75010, Paris, France; INSERM UMR 1132, Biologie de l'os et du Cartilage (BIOSCAR), Lariboisière Hospital, UFR de Médecine, Faculté de Santé, Université de Paris, 75010, Paris, France.
| | - Jacques-Marie Mercier
- Nantes Université, CHU Nantes, Service de chirurgie maxillo-faciale et stomatologie, F-44000, Nantes, France.
| | - Justine Loin
- Nantes Université, CHU Nantes, Service de chirurgie maxillo-faciale et stomatologie, F-44000, Nantes, France.
| | - Jean-Philippe Perrin
- Nantes Université, CHU Nantes, Service de chirurgie maxillo-faciale et stomatologie, F-44000, Nantes, France.
| | - Aline Joly
- Service de Chirurgie Maxillo-Faciale, Plastique et Brulés, Hôpital Trousseau, CHU de Tours, Tours, France.
| | - Claudia Letelier
- Department of Oral & Maxillofacial Surgery, Faculty of Dentistry, Universidad de Chile, Avenida Independencia 939, Santiago de Chile, Chile.
| | - Pierre Corre
- Nantes Université, CHU Nantes, Service de chirurgie maxillo-faciale et stomatologie, F-44000, Nantes, France; Nantes Université, Oniris, UnivAngers, CHU Nantes, INSERM, Regenerative Medicine and Skeleton, RMeS, UMR 1229, F-44000, Nantes, France.
| | - Hélios Bertin
- Nantes Université, CHU Nantes, Service de chirurgie maxillo-faciale et stomatologie, F-44000, Nantes, France; Nantes Université, UnivAngers, CHU Nantes, INSERM, CNRS, CRCI2NA, F-44000, Nantes, France.
| |
Collapse
|
8
|
Kamata M, Sakamoto Y, Ogata H, Sakamoto T, Ishii T, Kishi K. Influence of Lip Revision Surgery on Facial Growth in Patients With A Cleft Lip. J Craniofac Surg 2023; 34:1203-1206. [PMID: 36727767 DOI: 10.1097/scs.0000000000009191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Accepted: 10/10/2022] [Indexed: 02/03/2023] Open
Abstract
Although patients with cleft lip and palate often present with poor maxillary growth because of intrinsic and iatrogenic factors, the surgical influence of lip revision surgery, palatal fistula repair, and pharyngeal flap procedures remains uncertain in contrast to that of primary cleft lip repair and palatoplasty. Therefore, this study aimed to reveal factors inhibiting maxillary growth and inducing later orthognathic surgery. A retrospective analysis was conducted on the data of patients with cleft lip and palate who underwent a series of treatments at Keio University Hospital from 1990 to 2000. We collected data on patient sex, cleft type, number and timing of lip revision surgery, the incidence of palatal fistulae, history of pharyngeal flap procedures, and timing of a repeat bone graft, and reviewed whether these patients underwent orthognathic surgery later in life. Multivariate analysis was conducted using binary logistic regression to extract factors affecting later orthognathic surgery. A total of 52 patients were included in this study. Results showed that revision surgery conducted more than twice was the highest statistically significant predictor of later orthognathic surgery in patients with a cleft lip and palate ( P <0.05, odds ratio=43.3), followed by palatal fistula occurrence after cleft palate repair ( P <0.05, odds ratio=22.3). Therefore, primary surgical procedure is most important for these patients.
Collapse
Affiliation(s)
- Masafumi Kamata
- Department of Plastic and Reconstructive Surgery, Keio University School of Medicine, Tokyo , Japan
| | - Yoshiaki Sakamoto
- Department of Plastic and Reconstructive Surgery, Keio University School of Medicine, Tokyo , Japan
| | | | - Teruo Sakamoto
- Department of Orthodontics, Tokyo Dental College, Chiba, Japan
| | - Takenobu Ishii
- Department of Orthodontics, Tokyo Dental College, Chiba, Japan
| | - Kazuo Kishi
- Department of Plastic and Reconstructive Surgery, Keio University School of Medicine, Tokyo , Japan
| |
Collapse
|
9
|
One-Jaw versus Two-Jaw Orthognathic Surgery for Patients with Cleft: A Comparative Study Using 3D Imaging Virtual Surgical Planning. APPLIED SCIENCES-BASEL 2022. [DOI: 10.3390/app12094461] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
Abstract
Whether a one-jaw or two-jaw design is used in orthognathic surgery for patients with cleft remains varied and controversial. This study aimed to compare the two approaches using 3-dimensional imaging surgical simulation. This study was conducted on 41 consecutive patients with complete unilateral cleft lip and palate treated in the craniofacial center. All patients had original two-jaw virtual planning and orthognathic surgery. Simulation of one-jaw LeFort I surgery was performed using the same final dental occlusion on 3-dimensional images. Cephalometric data and asymmetry index were collected and compared among the designs. Average advancement of the maxilla was 7.46 mm in one-jaw and 4.80 mm in two-jaw design. SNA, SNB, and A-N perpendicular were significantly greater and close to normative data in the one-jaw design. ANB angles were similar in both designs. The anterior and posterior occlusal plane cants, the deviation of midline landmarks, and the asymmetry index were more improved in the two-jaw approach. It is concluded that the two-jaw cleft orthognathic surgery could significantly improve facial midline and symmetry compared with the one-jaw approach. However, the two-jaw surgery with mandibular setback produced less protrusive facial contour although a harmonious relationship between the maxilla and mandible was achieved.
Collapse
|
10
|
Early Prediction of the Need for Orthognathic Surgery in Patients With Repaired Unilateral Cleft Lip and Palate Using Machine Learning and Longitudinal Lateral Cephalometric Analysis Data. J Craniofac Surg 2021; 32:616-620. [PMID: 33704994 DOI: 10.1097/scs.0000000000006943] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
ABSTRACT The purpose of this study was to determine the cephalometric predictors of the future need for orthognathic surgery in patients with repaired unilateral cleft lip and palate (UCLP) using machine learning. This study included 56 Korean patients with UCLP, who were treated by a single surgeon and a single orthodontist with the same treatment protocol. Lateral cephalograms were obtained before the commencement of orthodontic/orthopedic treatment (T0; mean age, 6.3 years) and at at least of 15 years of age (T1; mean age, 16.7 years). 38 cephalometric variables were measured. At T1 stage, 3 cephalometric criteria (ANB ≤ -3°; Wits appraisal ≤ -5 mm; Harvold unit difference ≥34 mm for surgery group) were used to classify the subjects into the surgery group (n = 10, 17.9%) and non-surgery group (n = 46, 82.1%). Independent t-test was used for statistical analyses. The Boruta method and XGBoost algorithm were used to determine the cephalometric variables for the prediction model. At T0 stage, 2 variables exhibited a significant intergroup difference (ANB and facial convexity angle [FCA], all P < 0.05). However, 18 cephalometric variables at the T1 stage and 14 variables in the amount of change (ΔT1-T0) exhibited significant intergroup differences (all, more significant than P < 0.05). At T0 stage, the ANB, PP-FH, combination factor, and FCA were selected as predictive parameters with a cross-validation accuracy of 87.4%. It was possible to predict the future need for surgery to correct sagittal skeletal discrepancy in UCLP patients at the age of 6 years.
Collapse
|
11
|
Abstract
ABSTRACT Midface hypoplasia is one of the most significant sequelae of cleft lip and/or palate surgery. A complete understanding of the rate of orthognathic surgery across varying cleft phenotypes is a powerful tool for educating patients and families as to the treatment course that the patient will incur during their lifetime. Understanding the average rates of orthognathic intervention also can act to develop metrics for outcome evaluation with different treatment protocols. Attempting to identify the average rates of orthognathic intervention, the authors conducted a systematic review and meta-analysis by combining studies from 1987 to 2016 describing the frequency of orthognathic intervention on the different cleft phenotypes as the primary outcome. Secondary outcomes included identification of surgical protocol, age of patient at orthognathic intervention, and the method by which patients were evaluated for orthognathic intervention. The rate of orthognathic surgery was 38.1% for bilateral cleft lip and palate (BCLP), 30.2% for unilateral cleft lip and palate (UCLP), 4.4% for isolated cleft palate (ICP), and 1.8% for patients with isolated cleft lip (ICL). 71% (n = 10) reported using lateral cephalograms for orthognathic surgery evaluation and only one of those studies reported specific objective cephalometric measurements for orthognathic intervention. Our findings demonstrated that BCLP possessed the highest rate of orthognathic intervention followed by UCLP, ICP, and ICL. ICP and ICL both possessed low rates of orthognathic intervention. By sharing our findings, the authors hope to provide a useful tool for informing patients' families as to their risk of needing orthognathic intervention.
Collapse
|
12
|
Wangsrimongkol B, Flores RL, Staffenberg DA, Rodriguez ED, Shetye PR. Skeletal and Dental Correction and Stability Following LeFort I Advancement in Patients With Cleft Lip and Palate With Mild, Moderate, and Severe Maxillary Hypoplasia. Cleft Palate Craniofac J 2021; 59:98-109. [PMID: 33722088 DOI: 10.1177/1055665621996108] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
OBJECTIVE This study evaluates skeletal and dental outcomes of LeFort I advancement surgery in patients with cleft lip and palate (CLP) with varying degrees of maxillary skeletal hypoplasia. DESIGN Retrospective study. METHOD Lateral cephalograms were digitized at preoperative (T1), immediately postoperative (T2), and 1-year follow-up (T3) and compared to untreated unaffected controls. Based on the severity of cleft maxillary hypoplasia, the sample was divided into 3 groups using Wits analysis: mild: ≤0 to ≥-5 mm; moderate: <-5 to >-10 mm; and severe: ≤-10 mm. PARTICIPANTS Fifty-one patients with nonsyndromic CLP with hypoplastic maxilla who met inclusion criteria. INTERVENTION LeFort I advancement. MAIN OUTCOME MEASURE Skeletal and dental stability post-LeFort I surgery at a 1-year follow-up. RESULTS At T2, LeFort I surgery produced an average correction of maxillary hypoplasia by 6.4 ± 0.6, 8.1 ± 0.4, and 10.7 ± 0.8 mm in the mild, moderate, and severe groups, respectively. There was a mean relapse of 1 to 1.5 mm observed in all groups. At T3, no statistically significant differences were observed between the surgical groups and controls at angle Sella, Nasion, A point (SNA), A point, Nasion, B point (ANB), and overjet outcome measures. CONCLUSIONS LeFort I advancement produces a stable correction in mild, moderate, and severe skeletal maxillary hypoplasia. Overcorrection is recommended in all patients with CLP to compensate for the expected postsurgical skeletal relapse.
Collapse
Affiliation(s)
- Buddhathida Wangsrimongkol
- Hansjörg Wyss Department of Plastic Surgery, 12297NYU Langone Health, New York, NY, the United States.,Department of Preventive Dentistry, Division of Orthodontics, Faculty of Dentistry, Khon Kaen University, Thailand
| | - Roberto L Flores
- Hansjörg Wyss Department of Plastic Surgery, 12297NYU Langone Health, New York, NY, the United States
| | - David A Staffenberg
- Hansjörg Wyss Department of Plastic Surgery, 12297NYU Langone Health, New York, NY, the United States
| | - Eduardo D Rodriguez
- Hansjörg Wyss Department of Plastic Surgery, 12297NYU Langone Health, New York, NY, the United States
| | - Pradip R Shetye
- Hansjörg Wyss Department of Plastic Surgery, 12297NYU Langone Health, New York, NY, the United States
| |
Collapse
|
13
|
Tache A, Mommaerts MY. The need for maxillary osteotomy after primary cleft surgery: A systematic review framing a retrospective study. J Craniomaxillofac Surg 2020; 48:919-927. [DOI: 10.1016/j.jcms.2020.07.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2019] [Revised: 06/26/2020] [Accepted: 07/12/2020] [Indexed: 11/29/2022] Open
|
14
|
de Medeiros-Santana MNL, Perry JL, Yaedú RYF, Trindade-Suedam IK, Yamashita RP. Predictors of Velopharyngeal Dysfunction in Individuals With Cleft Palate Following Surgical Maxillary Advancement: Clinical and Tomographic Assessments. Cleft Palate Craniofac J 2019; 56:1314-1321. [DOI: 10.1177/1055665619852562] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Objective: To investigate whether morphofunctional velopharyngeal aspects may be considered predictors of appearance or worsening of hypernasality in patients with cleft palate after surgical maxillary advancement (MA). Design: Prospective. Setting: National referral center for cleft lip and palate rehabilitation. Participants: Fifty-two patients with repaired cleft palate, skeletal class III malocclusion, and normal speech resonance completed speech audio recordings and cone-beam computed tomography examination before (T1) and, on average, 14 months after (T2) MA. Interventions: Hypernasality was rated by 3 experienced speech-language pathologists using a 4-point scale and morphofunctional aspects on a 3-point scale. Cone-beam computed tomography image measurements were performed using Amira and Dolphin 3D software. For each velopharyngeal morphofunctional aspect analyzed, patients were compared according to the absence (G1) and presence (G2) of postoperative hypernasality. Main Outcome Measures: Comparison of hypernasality scores between T1 and T2 and association between hypernasality and each velopharyngeal morphofunctional aspect. Results: Significant difference was observed between T1 and T2 for hypernasality ( P = .031) and between G1 and G2 ( P = .015) for velar mobility, with significant association between this variable and hypernasality on T2 ( P = .041). Conclusions: Levator veli palatini mobility influenced the appearance of hypernasality after MA.
Collapse
Affiliation(s)
| | - Jamie L. Perry
- Department of Communication Sciences and Disorders, College of Allied Health Sciences, East Carolina University, Greenville, NC, USA
| | - Renato Yassutaka Faria Yaedú
- Department of Oral Surgery, Bauru School of Dentistry, Hospital for Rehabilitation of Craniofacial Anomalies, University of Sao Paulo, Bauru, Sao Paulo, Brazil
| | - Ivy Kiemle Trindade-Suedam
- Department of Biological Sciences, Bauru School of Dentistry and Laboratory of Physiology, Hospital for Rehabilitation of Craniofacial Anomalies, University of Sao Paulo, Bauru, Sao Paulo, Brazil
| | - Renata Paciello Yamashita
- Laboratory of Physiology, Hospital for Rehabilitation of Craniofacial Anomalies, University of Sao Paulo, Bauru, Sao Paulo, Brazil
| |
Collapse
|
15
|
Dalle Ore C, Schoenbrunner A, Brandel M, Kronstadt N, McIntyre J, Jones M, Gosman A. Incidence of Le Fort Surgery in a Mature Cohort of Patients With Cleft Lip and Palate. Ann Plast Surg 2018; 78:S199-S203. [PMID: 28399025 DOI: 10.1097/sap.0000000000001049] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Primary repair of cleft lip and palate occurs early in life, but ideal timing of these interventions remains controversial. Prior research has indicated that a later palate repair may improve patients' midfacial growth long term, whereas optimal timing of lip repair to maximize midfacial growth has not been identified.The purpose of this study is to analyze a large, diverse cohort of patients with cleft lip and palate to determine whether timing of primary palate repair and primary lip repair contributed significantly to subsequent orthognathic surgery. METHODS Seventy-one nonsyndromic patients with cleft lip and/or palate were followed until age 23 years, and data regarding original diagnosis, surgical procedures, and dates were collected. Within our patient cohort, 12 patients (16.9%) underwent orthognathic surgery. Binary logistic regressions, Fisher exact tests, and Mann-Whitney U tests were used to determine whether timing of primary palate repair and primary lip repair contributed significantly to subsequent orthognathic surgery. RESULTS In our cohort, the association of early lip repair with later orthognathic surgery trended toward significance (P = 0.080). Timing of primary palate repair was not significantly associated with later orthognathic surgery (P= 0.291). When correcting for sex, race, diagnosis, location of care, incidence of lip adhesions, and incidence of lip revisions, patient age at primary lip procedure was a significant predictor of later orthognathic surgery (P = 0.041). CONCLUSIONS Inconsistent with prior research, age at primary palate repair in our cohort was not correlated with incidence of orthognathic surgery. Delayed primary lip repair was associated with a significant decrease in the rate of subsequent orthognathic surgery.
Collapse
Affiliation(s)
- Cecilia Dalle Ore
- From the *Division of Plastic Surgery, Department of Surgery, UC San Diego Medical Center, San Diego, CA; †Division of Plastic Surgery, University of Massachusetts Memorial, Worcester, MA; and ‡Division of Genetics and Dysmorphology, Rady Children's Hospital San Diego, San Diego, CA
| | | | | | | | | | | | | |
Collapse
|
16
|
Thompson JA, Heaton PC, Kelton CM, Sitzman TJ. National Estimates of and Risk Factors for Inpatient Revision Surgeries for Orofacial Clefts. Cleft Palate Craniofac J 2017; 54:60-69. [DOI: 10.1597/15-206] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Objective To provide national estimates of the number and cost of primary and revision cleft lip and palate surgeries in the U.S. and to determine patient and hospital characteristics associated with disproportionate use of revision surgery. Design Retrospective cross-sectional study using data obtained from the 2003, 2006, and 2009 Kids’ Inpatient Database. Setting Inpatient. Patients Children with CL, CP, or CLP undergoing inpatient cleft lip and/or palate surgery. Interventions Inpatient cleft lip and/or palate surgery. Main Outcome Measures Orofacial cleft surgery estimates, estimates of primary versus revision surgeries, and estimated inflation-adjusted hospitalization costs. Results In 2009, there were a total of 2824 and 5431 hospitalizations for cleft lip and palate surgeries, respectively. Revision surgery accounted for 24.2% of cleft lip surgeries and 36.8% of cleft palate surgeries. Children with CLP (OR 1.87, 95% CI 1.48-2.38), a syndromic diagnosis (OR 1.47, 95% CI: 1.16-1.87), or private insurance (OR 1.71, 95% CI: 1.41-2.09) were more likely to undergo cleft lip revision surgery. Similar risk factors were found for children undergoing cleft palate revision. Mean cost per hospitalization ranged from $7564 to $8393 in 2009, depending on surgery type, and did not change significantly (in 2009 U.S. $) between 2003 and 2009. Conclusions Interventions to reduce revision surgery by improving results of primary surgery should be targeted in the population of identified high-risk (e.g., syndromic) patients. In addition, the association of health insurance status with revision surgery highlights the need to understand and address the impact of economic disparities on cleft care delivery.
Collapse
Affiliation(s)
- Jeffrey A. Thompson
- James L. Winkle College of Pharmacy, University of Cincinnati Academic Health Center, Cincinnati, Ohio
| | - Pamela C. Heaton
- Pharmacy Practice and Administrative Sciences, James L. Winkle College of Pharmacy, University of Cincinnati Academic Health Center, Cincinnati, Ohio
| | - Christina M.L. Kelton
- Carl H. Lindner College of Business, James L. Winkle College of Pharmacy, University of Cincinnati, Cincinnati, Ohio
| | - Thomas J. Sitzman
- Division of Plastic Surgery, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| |
Collapse
|
17
|
Miachon MD, Leme PLS. Surgical treatment of cleft lip. Rev Col Bras Cir 2016; 41:208-14. [PMID: 25140654 DOI: 10.1590/s0100-69912014000300013] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2012] [Accepted: 01/04/2013] [Indexed: 11/21/2022] Open
Abstract
We performed a systematic review of the literature on the surgical treatment of cleft lip, emphasizing the prevalence, complications associated with the treatment and the points of disagreement between authors. We conducted a literature cross-sectional search that analyzed publications in books, articles and on the databases SciELO - Scientific Electronic Library Online, PubMed, of the National Center for Biotechnology Information. We conclude that: 1) the severity of the cleft will indicate the technique presenting more advantages; 2) the different approaches indicate that there is no consensus on the optimal technique; and 3) the surgeon experience contributes to choosing the best option.
Collapse
|
18
|
Scopelliti D, Fatone FMG, Cipriani O, Papi P. Simultaneous options for cleft secondary deformities. Ann Maxillofac Surg 2014; 3:173-7. [PMID: 24205478 PMCID: PMC3814667 DOI: 10.4103/2231-0746.119229] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
INTRODUCTION So much has been written by so many about secondary procedures in cleft surgery that testify not only the complexity and variable expression of cleft deformity itself but also the need to find methods of primary surgery that will reduce, if not avoid, adverse effects on all the structures and functions involved and affected. It must be the principal aim of cleft surgeon to restore the deformed and displaced regional anatomy to as close to normality as possible, whether or not true hypoplasia exists. The pathogenesis of secondary deformities is related to specific features as: the presence of scar tissues into the cleft basal bone area, that inhibits alveolar growth; scarring of palatal soft tissue, that inhibits growth and causes palatal orientation of dentoalveolar elements; and the exceeding lip tension, that may inhibits maxillary growth along dentoalveolar structures. MATERIALS AND METHODS From 2008 to 2011 at the Department of Cranio-Maxillo-Facial Surgery, Santo Spirito Hospital, Rome 25 patients (21 males and 4 females) who had undergone previous surgery for unilateral cleft lip and palate (UCLP) and bilateral cleft lip and palate (BCLP) were enrolled in our study. Diagnosis of deformity was made by means of a cephalometric and photographic analysis (Arnett), gipsometry and a radiological assessment (orthopantomography, lateral and frontal cephalometric X-rays). Moreover, every patient was studied with a temporomandibular joint (TMJ) tomography, TMJ magnetic resonance imaging (MRI) and a computerized gnatography to better evaluate potential TMJ dysfunctions. The surgical procedures adopted simultaneously were: Total or segmental maxillomandibular osteotomies, genioplasty, rhinoplasty, labioplasty, and application of facial prosthesis. Every patient received a postoperative questionnaire to evaluate his/her satisfaction with the surgery performed. RESULTS The surgical procedures adopted were Le Fort I osteotomy and bilateral sagittal split osteotomy (BSSO) in 16 patients (65%) and only Le Fort I osteotomy in 9 patients (35%). A relapse of malformation occurred in 4.5% of cases. Concerning the patient questionnaire, 96% of patients were satisfied with the jaw surgery and favorable for combined surgery, 88% were satisfied with lip-nose surgery, and finally 76% would advise to a friend. CONCLUSIONS Simultaneous correction of the deformities is indicated as to avoid several surgical distresses for the patient, to improve facial aesthetic and function in one surgical step, and to reduce risk of psychological consequences.
Collapse
Affiliation(s)
- Domenico Scopelliti
- Department of Cranio-Maxillo-Facial Surgery, Santo Spirito Hospital, Rome, Italy
| | | | | | | |
Collapse
|
19
|
Verzé L, Bianchi FA, Ramieri G. Three-dimensional laser scanner evaluation of facial soft tissue changes after LeFort I advancement and rhinoplasty surgery: patients with cleft lip and palate vs patients with nonclefted maxillary retrognathic dysplasia (control group). Oral Surg Oral Med Oral Pathol Oral Radiol 2013; 117:416-23. [PMID: 24630160 DOI: 10.1016/j.oooo.2013.12.406] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2013] [Revised: 11/12/2013] [Accepted: 12/17/2013] [Indexed: 11/24/2022]
Abstract
OBJECTIVE The aim of this study was to analyze the differences in facial soft tissue changes, despite the same extent of upper jaw forward movement, between patients with unilateral cleft lip and palate (uCLP) and those without, after LeFort I osteotomy and secondary rhinoplasty. STUDY DESIGN Twelve patients with maxillary retrognathic dysplasia and nose deformity were divided in 2 groups, A (uCLP) and B (control), and compared on the basis of the same maxillary advancement. Cephalometry and 3D mean facial model of groups A and B were obtained before and after surgery. Linear and angular measurements were calculated. RESULTS Upper vermilion and alar base remained unchanged in group A but increased in group B. In both groups, symmetry of the nasal base was improved, and an increase of the sagittal projection of the lips was observed. CONCLUSIONS 3D analysis showed that surgical procedures for uCLP can provide a satisfactory aesthetic outcome, but some differences are evident in comparison with the control group.
Collapse
Affiliation(s)
- Laura Verzé
- Department of Public and Pediatric Health Sciences, Legal Medicine Section, University of Turin, Turin, Italy.
| | - Francesca Antonella Bianchi
- Department of Surgical Sciences, Maxillofacial Surgery Section, San Giovanni Battista Hospital, University of Turin, Turin, Italy
| | - Guglielmo Ramieri
- Department of Surgical Sciences, Maxillofacial Surgery Section, San Giovanni Battista Hospital, University of Turin, Turin, Italy
| |
Collapse
|
20
|
Gundlach KK, Bardach J, Filippow D, Stahl-de Castrillon F, Lenz JH. Two-stage palatoplasty, is it still a valuable treatment protocol for patients with a cleft of lip, alveolus, and palate? J Craniomaxillofac Surg 2013; 41:62-70. [DOI: 10.1016/j.jcms.2012.05.013] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2011] [Revised: 05/28/2012] [Accepted: 05/29/2012] [Indexed: 10/28/2022] Open
|