Preformed customized healing abutments in biologically oriented preparation technique procedure: a 3-year retrospective case-control study.

AIM: To determine the 3-year clinical and dimensional change of the soft tissue following implant placement in healed sites before and after loading with either customized or conventional healing abutments. MATERIALS AND METHODS: Premolar/molar implants were immediately loaded with either provisional and customized abutments without finishing lines according to principles of the Biologically Oriented Preparation Technique (BOPT), test group, or conventional healing abutments, control group. Three months later, the definitive crowns were fabricated. Primary outcomes (changes in the soft tissue) and secondary outcomes (adverse events) had been registered. RESULT: Fifty out of 87 subjects originally included were finally selected for this retrospective analysis: 23 in the test and 27 in the control group. During the first days after surgery 2 adverse events of mucositis, one for each group, occurred. A Few technical complications such as unscrewing 4 screw-retained crowns were recorded. A significant increase in the alveolar width was observed in both groups (test = +2.5±0.5mm, and control = +1.0±0.9mm). The widths appeared to not be merely changed from 3 months to 3 years in both groups. There were no significant differences regarding the width of the keratinized mucosa measured at baseline and after follow-up. Jemt papilla index showed a higher increase in the test group compared with that of the control group. CONCLUSION: Within 3 years of the follow-up period, peri-implant soft tissue outcomes of single, immediately loaded implants with customized healing abutments showed better results in terms of thickness and width when they were compared with those of the conventional group. Side effects count (mucositis and dehiscence) appeared to be very similar between the two groups. In addition, customized healing abutments led to significant augmentation of the alveolar width more than twice that registered in the conventional group.

Treatment of Benign Lesion of Levels I or II of the Parotid Gland: Long Term Results of Partial Superficial Parotidectomy.

ABSTRACT: The correct surgical approach to benign parotid gland tumors is still matter of debate, it should be chosen considering the possibility of local recurrence or facial nerve complications in case of "not necessary" facial nerve dissection. In the era of minimally invasive surgery, more sparing approaches such as extracapsular dissection or partial superficial parotidectomy (PSP) are gaining popularity. The aim of the study is to present surgical results and long-term outcomes of PSP (level i or ii) in a large group of patients. Six hundred fifty-one patients who underwent parotid surgery between 2004 and 2020 were initially considered. Five hundred forty patients with benign lesions treated with PSP, enucleation, ECD were enrolled. Clinical features, surgical data, postoperative scarring, seroma, dehiscence, neuroma, outcomes as Frey syndrome, and delayed facial nerve dysfunction have been evaluated. 65.5% PSP, 25.2% enucleation, and 9.2% extracapsular dissection. No statistical difference in surgical time has been found (P 0.16). P  > 0.05 for seroma, neuroma, Frey syndrome, and facial palsy between different type of surgery. Frey syndrome in PSP: 6/135 (4.4%) in 2004 to 2012 and 2/219 (0.9%) in 2013 to 2020. The reduction between periods is significant (P < 0.04). Recurrence: 0.8% (3/354) for PSP patients, 3.4% (5/ 136) in enucleation and 10% (5/50) in ECD (P = 0.02). Partial superficial parotidectomy can be considered a minimally invasive and quick procedure with low complication rate. Our data seem to support this statement (large case series and long-term follow-up).

Treatment decision-making for a post-traumatic malocclusion in an elderly patient: A case report.

Traumatic dental injuries in elderly patients are a rising trend due to demographic and social changes of the population. Older dentulous patients in good health have become increasingly common. The development of a post-traumatic malocclusion is a common sequela resulting from mandibular condyle fracture, as in the case reported in this paper. The decision-making process led the authors to rule out conservative treatment options and to perform orthognathic surgery on an 81-year-old patient, an unprecedented report in the literature. At one-year follow-up, prophylactic therapy, a specific surgical technique, and osteotomy fixation have restored the occlusion to the pre-traumatic condition.

Standardization of three-dimensional pose of cylindrical implants from intraoral radiographs: a preliminary study.

BACKGROUND: To introduce a theoretical solution to a posteriori describe the pose of a cylindrical dental fixture as appearing on radiographs; to experimentally validate the method described. METHODS: The pose of a conventional dental implant was described by a triplet of angles (phi-pitch, theta-roll, and psi-yaw) which was calculated throughout vector analysis. Radiographic- and simulated-image obtained with an algorithm were compared to test effectiveness, reproducibility, and accuracy of the method. The length of the dental implant as appearing on the simulated image was calculated by the trigonometric function and then compared with real length as it appeared on a two-dimensional radiograph. RESULTS: Twenty radiographs were analyzed for the present in silico and retrospective study. Among 40 fittings, 37 resulted as resolved with residuals ≤ 1 mm. Similar results were obtained for radiographic and simulated implants with absolute errors of - 1.1° ± 3.9° for phi; - 0.9° ± 4.1° for theta; 0° ± 1.1° for psi. The real and simulated length of the implants appeared to be heavily correlated. Linear dependence was verified by the results of the robust linear regression: 0.9757 (slope), + 0.1344 mm (intercept), and an adjusted coefficient of determination of 0.9054. CONCLUSIONS: The method allowed clinicians to calculate, a posteriori, a single real triplet of angles (phi, theta, psi) by analyzing a two-dimensional radiograph and to identify cases where standardization of repeated intraoral radiographies was not achieved. The a posteriori standardization of two-dimensional radiographs could allowed the clinicians to minimize the patient's exposure to ionizing radiations for the measurement of marginal bone levels around dental implants.

Transoral robotic tongue base reduction and supraglottoplasty combined with maxillomandibular advancement: a new option for selected sleep apnea patients? Preliminary report.

PURPOSE: Transoral robotic surgery (TORS) and maxillo-mandibular advancement (MMA) are effective options for obstructive sleep apnea patients. Identification of the correct candidate is by far the most important item in achieving a succesful outcome. As a consequence, not all patients can be managed successfully via one or the other procedure. To overcome the limits of any single procedure we have combined, in a very selected population of patients, TORS tongue base reduction and MMA. Preliminary data are encouraging, in terms of both AHI and ESS. METHODS: A retrospective cohort study was conducted on five patients treated with combined TORS-MMA surgery. Demographic and clinical data, pre-operative and post-operative PSG and ESS were collected. RESULTS: Three of five patients were recruited. All patients presented severe OSAHS. Mean AHI and ESS went respectively from 48 and 12 pre-operatively to 19 and 4 post-operatively. Minor bleeding occurred in two patients. No significant sequelae have been reported. CONCLUSIONS: Combined TORS and MMA is feasible and safe. Our very preliminary data are encouraging, in terms of both AHI and ESS. Long-term follow-up and a larger amount of subjects are needed to confirm this surgical approach as a valuable option for selected OSAHS patient.

Congenital Pyriform Sinus Fistula: Management of an Extra-Delayed and Atypical Case.

Clinical presentations of pyriform sinus fistulas vary, and this sometimes leads to a delay in diagnosis and treatment. Recently, we experienced a case of recurrent cervical abscesses occurring after thyroidectomy in an adult affected by a bifidus pyriform sinus fistula. The diagnostic dilemma was related to the timing of events, with a single episode of acute suppurative thyroiditis having occurred 16 years before the onset of the more recent clinical scenario. An endoscopic approach allowed effective management of this clinical case.

Bilateral Harvesting of a Fibula Free Flap: Assessment of Morbidity.

PURPOSE: To investigate morbidity related to harversting of bilateral fibula free flap for head and neck reconstruction using subjective and functional tests. METHODS: Patients were retrospectively evaluated using point evaluation system (PES) and balance evaluation systems test (BESTest) questionnaires to assess morbidity related to surgery. RESULTS: Five patients were enrolled in the study. Mean PES scores was 22.2 over 24. Mean overall function assessed with BESTest was 77.6%, and the results were poorest for section I. Sections V and VI had scores of 88% and 83%, respectively, indicating that the sensory balance and gait stability of the patients were compromised only minimally. CONCLUSION: Bilateral harvesting of the fibula free flap is not associated with an increase in long-term morbidity and does not lead to significant functional impairments. Therefore, this procedure should be considered safe, and can be performed without concern regarding morbidity, when bone reconstruction with a fibula free flap is indicated.

Neonatal mandibular distraction in a patient with Treacher Collins syndrome.

The purpose of this study was to analyze a case of mandibular distraction in a case of Treacher Collins syndrome. Mandibular distraction is an adequate surgical treatment of patients with Pierre Robin sequence and represents an alternative to tracheostomy. In severe hypoplastic cases or when three-dimensional vector control or gonial angle control is necessary, extraoral bidirectional or multidirectional devices have an advantage over intraoral devices. The anchorage obtained with transfixing Kirschner wires fixed in the mandibular distal segment and symphysis is crucial in neonates for the stability of the devices. Moreover, with the use of a second pin for each bone segment, the extraoral devices allow to modify the vector orientation and consequently the shape of the newly formed mandible.

Maxilla management in "phase II" skeletal surgery for obstructive sleep apnea.

This study investigates the management of patients with obstructive sleep apnea (OSA) who have previously undergone palatal surgery and subsequently undergo maxillomandibular advancement (MMA). The research entails a retrospective analysis of phase II MMA cases from 2017 to 2022. Data encompassing demographics, clinical profiles, pre- and post-operative polysomnographic and radiological findings, surgical techniques, and complications were collected. Out of the 14 patients studied, conservative vestibular approaches were applied universally, with four cases necessitating the sectioning of descending palatine arteries. Results indicate an average maxillary sagittal advancement of 10.07 mm, a mean counterclockwise rotation of the maxillary occlusal plane at 9.35°, and a decline in apnea-hypopnea index from 45.5 to 4.5 events per hour. Surgical success and cure rates were 93.3% and 40%, respectively, with no major complications observed throughout the 45-month follow-up. This study underscores the safe and efficacious application of MMA in OSA patients with prior palatal surgery, offering valuable insights into their management.

New test for systematic skills enhancement and improvement in maxillofacial surgery training: multicentre pilot study.

We know of few studies in the international scientific literature that specifically address the evaluation of surgical and clinical progress among physicians undergoing specialist training in maxillofacial surgery. Identifying a reliable tool to accurately assess both theoretical knowledge and surgical skills of trainees is essential. The primary aim of this study therefore was to design a comprehensive assessment tool that is capable of evaluating both the theoretical and practical skills of physicians undergoing specialist training in maxillofacial surgery. The methodology employed aims to ensure fairness and effectiveness in skills development, thereby optimising training activities. To meet this need, an evaluation and self-assessment test was developed for maxillofacial surgery trainees at the Ospedali Riuniti of Ancona. Data collection involved digitally administered evaluations and self-assessment tests focused on maxillofacial traumatology, based on AO trauma surgery references. Data were processed into graphs which revealed a progressive learning trend following an initial adjustment phase, leading to optimal outcomes in both clinical and surgical domains. The evaluation and self-assessment test proved to be a valuable learning tool with which to gauge advancements in clinical and surgical skills among maxillofacial surgery residents.

Resonance Frequency Analysis to Assess the Stability of Immediate Implants: A Retrospective Clinical Trial.

Adequate implant primary stability is a key factor to obtain osseointegration and can be measured at insertion by insertion torque (IT) and at different timepoints with resonance frequency analysis (RFA), expressed as an implant stability quotient (ISQ). This retrospective study investigated the correlation between ISQ and IT at implant insertion. All patients who were eligible for this single-cohort retrospective clinical trial were treated with an immediate implant. IT parameters were recorded at implant insertion, and ISQ values were recorded at insertion and at 2-, 4-, and 12-month follow-ups. The study comprised 23 patients who received 32 implants. The mean IT value was 46.87 ± 9.66 Ncm (range: 25 to 65 Ncm), and the mean ISQ value at implant insertion was 71.45 ± 4.24 (range: 63 to 78); these values showed a statistically significant correlation (P < .0001). According to the present data and considering the implant design used in this trial, there is a statistically significant and positive correlation between IT and ISQ values. Thus, ISQ can be used as a reliable method to measure implant stability over time.

Clinical and radiographic evaluation of transalveolar two-step osteotome-mediated sinus floor elevation versus sinus augmentation with displacement of the palatal wall in lateral direction coupled to alveolar ridge split technique: A 3-year retrospective study.

INTRODUCTION: The present study aimed to examine the middle-term effects of transcrestal double-sinus elevation (TSFE) versus alveolar/palatal split expansion technique (APS) and simultaneous implant placement in the augmented sinus. NULL HYPOTHESIS: there were no differences between groups. MATERIAL & METHODS: Magnetoelectric device was used for bone augmentation and expansion techniques in long-standing edentulous patients with a deficiency in vertical height in the posterior maxilla (3mm to 4mm residual bone height): TSFE group, or two-stage process with a first transcrestal sinus floor augmentation and a second sinus floor elevation with immediate implant placement; APS group, or "dual split and dislocation" of the two cortical bony plates towards the sinus and palatal side. Volumetric and linear analyses were performed on the superimposed preoperative and postoperative 3-year computed tomography scans. The level of significance was set at 0.05. RESULTS: Thirty patients were selected for the present analysis. For both groups significant differences were found in the volume outcomes between baseline and 3-year follow-up, showing a gain of about +0.28±0.06cm3 for the TSFE group, and +0.43±0.12cm3 for the APS group, with p-values < 0.0001. However, an effective increase of the volume of the alveolar crest was registered just in the APS group (+0.22±0.09cm3). A significant increase in bone width was found in the APS group (+1.45±0.56mm with p-value < 0.0001); on the contrary, a slight width reduction of the alveolar crest was observed in the TSFE group (-0.63±0.21mm). DISCUSSION: TSFE procedure seemed to not affect the shape of the alveolar crest. APS procedures led to a higher increase of the volume available for dental implant placement and could be used in horizontal bone defects too.

Lateral Displacement of Maxillary Sinus Palatal Wall: A 1-Year Retrospective Computerized Tomography Study.

PURPOSE: To examine the short-term outcomes of maxillary sinus augmentations consisting of laterally and apically displacing the palatal wall through a transcrestal approach. MATERIALS AND METHODS: The maxillary sinus floor was fractured in its palatal aspect by allowing a displacement in the buccal and apical direction with a magnetoelectric system. A medial displacement of the alveolar crest in its palatal bony plate was performed at the same time. Crestal bone change was investigated using superimposed preoperative and postsurgical computed tomography scans. Clinical and radiologic outcomes over 1 year were evaluated. RESULTS: A total of 18 implants were selected for retrospective volumetric and linear analyses. Sinus floor and alveolar bone augmentation surgery led to a significant increase in the bone volume (P = .0002) from 0.134 ± 0.060 cm3 to 0.639 ± 0.166 cm3, with an overall gain of +0.504 ± 0.139 cm3. No part of the implant apices appeared to protrude into the maxillary sinus at the 1-year follow-up. The width of the alveolar crest changed from 5.1 ± 0.5 mm to 6.5 ± 0.7 mm, with a significant increase of +1.4 ± 0.6 mm registered at 1 year. However, a marginal bone loss of 1.0 ± 0.8 mm was observed. When tooth positions were investigated, no significant differences between the two groups (premolars versus molars) were found. CONCLUSION: Significant and effective bone gains allowed proper placement of the dental implants but with a minimal loss of peri-implant bone volume.

Antibiotic Prophylaxis in Torso, Maxillofacial, and Skin Traumatic Lesions: A Systematic Review of Recent Evidence.

Use of antibiotic prophylaxis (AP) in trauma patients is a common practice. However, considering the increasing rates of antibiotic resistance, AP use should be questioned and limited only to specific cases. We performed a systematic review of recent literature (from year 2000), aiming to summarize the state of the art on efficacy and appropriateness of AP in patients with traumatic injuries of torso, maxillofacial complex and skin (including burns). Twenty-six articles were selected. In thoracic trauma, AP could be useful in reducing infective complications in tube thoracostomy for penetrating trauma. In maxillo-facial trauma, AP could find a role in the peri-operative trauma setting in the case of a graft or prosthetic implant. In abdominal trauma, there is a lack of consensus on the definition of contamination, infection, antibiotic therapy, and prophylaxis. In burned patients, routine AP is not suggested. In the case of human bites to the extremities, AP could find an indication. Future studies should focus on the subcategories of patients at higher risk of infection, identifying those who would benefit from AP. Attention to antimicrobial stewardship and guidelines focused on AP in trauma are required, to reduce antibiotic abuse, and increase quality research.

Infant mandibular distraction in absence of ascending ramus: case series.

BACKGROUND: Severe microretrognathia with the absence of ascending mandibular ramus is a challenging deformity and treatment must aim to avoid tracheostomy or remove it as soon as possible. Although it is not often reported, mandibular distraction osteogenesis represents a valid treatment option in infants affected by hypoplastic mandible Pruzansky-Kaban type IIb and III. CASE PRESENTATION: The authors describe 3 cases of infants affected by severe respiratory insufficiency due to congenital mandibular hypoplasia, with follow up ranging from 4 to 8 years. Clinical and technical considerations on treatment choices and outcomes are discussed starting from review of the literature and direct clinical experience. CONCLUSION: Early mandibular distraction, specifically bidirectional distraction, is an effective and repeatable technique that leads to mandible lengthening with counterclockwise rotation, pogonion projection increase, anteropositioning of the tongue base, and expansion of oropharyngeal volume with positive effect on the respiratory problems of the infant. Even in Treacher Collins patients, known to have a low decannulation rate, all of these elements are essential for effective speech and swallowing therapy and for a subsequent attempt of decannulation.

Neck dissection with harmonic instruments and electrocautery: a prospective comparative study.

BACKGROUND: Harmonic instruments are becoming popular in head and neck surgeries. In this prospective, randomized study, the efficacy of the harmonic instruments and electrosurgical technique is compared. MATERIALS AND METHODS: A total of 48 patients undergoing unilateral neck dissection were divided into two groups. In one group, surgery was performed using conventional hemostatic instruments while in the other, only harmonic instruments were used. The two techniques were then compared with regard to intra- and post-operative blood loss, complications in operating time, drain, tracheotomy and nasogastric tube duration, and post-operative hospital stay. RESULTS: Differences in operative time (P = 0.647), total suction drainage (P = 0.362) and time that drains (P = 0.404), nasogastric tube (P = 0.378), and tracheotomy (P = 0.052) were kept in place and proved not significant. The average blood loss during surgery was significantly greater in the CH group (P = 0.003) as the number of hemoclips and resorbable ligature used (P = 0.002). CONCLUSIONS: In contrast to what has been reported up to now, our study did not reveal a net advantage in the use of harmonic instruments with respect to classical instruments in terms of surgical outcome. On the contrary, harmonic tools had a higher complication rate (i.e., salivary fistula and lymphatic leak) probably due to the decreased ability of this instruments to permanently close glandular structures and lymphatic ducts. In these cases, a closure technique such as electrocautery or classic knot-tying should be used.

Bone Assessment in Grafted and Ungrafted Sockets After Dental Implant Placement: A 10-year Follow-up Study.

PURPOSE: The purpose of this study was to compare success and outcomes among implants positioned either in grafted or ungrafted alveoli during 10 years of follow-up. MATERIALS AND METHODS: This retrospective analysis was conducted on data of subjects who underwent tooth extraction and alveolar ridge preservation. Sites, one per patient, were ranked into three groups: postextraction ungrafted alveoli, and postextraction grafted alveoli with either synthetic magnesium-enriched hydroxyapatite or porcine bone. An absorbable collagen sheet was used to completely cover all the sockets. A secondary intention healing was sought for all procedures. Data regarding implant survival and marginal bone loss around implants were gathered until the 10-year follow up. Pairwise comparisons were performed with nonparametric tests, and statistical significance was set at .01. RESULTS: Sixty-three subjects were included: 42 implants (19 and 23 in the magnesium-enriched hydroxyapatite and porcine bone groups, respectively) placed in grafted sites and 21 in nongrafted sites. The success rate of the grafted groups was 88.1% (CI: 78.3% to 97.9%) at the 10-year follow-up. On the other hand, in the ungrafted group, the overall success rate was 85.7% (CI: 70.8% to 100%). Peri-implant marginal bone loss at the 10-year follow-up for the magnesium-enriched hydroxyapatite group was 1.2 (0.7) mm, while for the porcine bone group, it was close to 0. The behavior of the ungrafted group appeared to be significantly different compared with both grafted groups; however, marginal bone levels ranging from 0.1 to 0.4 mm were observed from 3 to 10 years. CONCLUSION: A difference in terms of long-term success rates between grafted and ungrafted sites was not revealed. Bone loss was significantly higher in the magnesium-enriched hydroxyapatite grafted group compared with those in the other groups (without or with other bone substitute material).

Computed tomography-aided descriptive analysis of maxillary and mandibular atrophies.

INTRODUCTION: The aim of the present retrospective chart review was to analyze by Computed Tomography (CT) scan technique the degree of maxillomandibular atrophies, searching for differences between totally- and partially-edentulous subjects, and possibly identify and classify maxillomandibular atrophy staged patterns for implant planning in both totally- and partially- edentulous jaws. MATERIAL AND METHODS: CT scans of 89 mandibles and 77 maxillae from 111 patients were classified according to six different patterns of residual ridge resorption and to two different groups of edentulism (totally- and partially-edentulous). Maxillomandibular absolute linear dimensions were calculated and results compared for statistically significant differences by Wilcoxon tests. RESULTS: Maxillomandibular CT cross-section interpretation showed different patterns of linear bone remodelling (height values) between the two groups of edentulism joined with specific positions in the maxilla or mandible. The judgment of the investigator was uncertain in the analysis of the mandibular posterior areas with similar percentages for both totally- and partially-edentulous groups (12.5% and 11.5%, respectively). DISCUSSION: The 3D analysis is self-explanatory and easy to apply, aided by CT scans. The measurements between the referring planes and inviolable anatomical structures (nasal floor NFD, lower border of mandible LBD, inferior alveolar nerve AND, and sinus floor SFD), showed that class III may not guarantee an optimal implant placement, especially in the totally-edentulous group, due to a major degree of pneumatisation.

Customized vs Conventional Implant-Supported Immediate Provisional Crowns for Fresh-Socket Implant: A Medium-Term Cone Beam Computed Tomography Study.

PURPOSE: To measure the volume effect on maintaining a sealing around immediately rehabilitated dental implants in a comparison between customized and conventional provisional crowns at a 3-year follow-up. MATERIALS AND METHODS: A single crown supported by a dental implant was used as a rehabilitation strategy for a failing tooth. The primary predictor was the type of immediate restoration with custom or conventional provisional crowns; a secondary predictor was tooth position: incisor, canine, or premolar. In order to accurately measure the width between buccal and palatal plates at the alveolar margin in a comparison between preoperative (before tooth extraction) and postoperative (at the 3-year follow-up) radiographs, two cone beam computed tomography (CBCT) scans were three-dimensionally analyzed and superimposed. RESULTS: Seventy-six patients, rehabilitated with single implants, were selected (31 implants belonging to the custom group and 45 to the conventional group). In patients treated with conventional restorations, a significant shrinkage (-0.6 ± 1.2 mm with P = .002) was registered. On the other hand, the bone change registered for the custom restoration group appeared negligible, with a nonsignificant and slight increase in width (+0.2 ± 0.7 mm). When the subgroups regarding the implant sites were investigated, the decrease in width was very limited for the canine tooth in the custom group (-0.3 ± 0.2 mm), whereas the shrinkage at the canine in the standard group appeared to be significantly higher (-1.5 ± 0.7 mm with P = .0001). CONCLUSION: An anatomically contoured provisional restoration may provide a strategy to stimulate peri-implant soft tissue healing, minimize loss of buccal bone plate at the marginal level, and maintain pristine volume in the alveolar bone better than noncustomized restorations.