Incisal Edge Research Articles

Evaluation of normal range of maximum mouth opening for Pune Maharashtra adult population

Background and Aim: Maximal mouth opening (MMO) is used as a marker of masticatory pathology. MMO varies with age, height, gender, and race. The current study is an attempt to calculate the normal range of maximum mouth opening in an adult Pune Maharashtra population. Materials and Methods: A total of 800 individuals, 400 males and 400 females, in the age group of 18–60 years attending outpatient department in Bharati Dental College and Hospital, Pune were randomly selected and divided into four groups according to their age ranges. In addition to the basic demographic data, MMO was measured in these individuals. The subjects were asked to open their mouth maximally until no further opening was possible. The distance from the incisal edge of the upper incisor teeth to the incisal edge of the lower incisor teeth was measured using a calibrated fiber ruler. Statistical analysis was performed. Results: The mean MMO for males was 50.58 (standard deviation [SD] ± 2.16) mm (Range 37–56 mm) and for females was 48.29 (SD ± 3.12) mm (Range 36–53 mm). There was a statistically significant difference between the mouth opening of male and female in all the age groups with P < 0.05 A linear relationship was observed between the mouth opening and age in both males and females and the mouth opening decreased as the age increased. In the age group of 18–29 years, the mean MMO was 54.34 (SD ± 1.84) mm. The range was 39–56 mm for males and 51.63 (SD ± 2.33) mm. with range 38–53 mm for females. In the age group of 30–39 years, the mean MMO was 52.09 (SD ± 1.72) (range 38–53 mm) and 50.07 (SD ± 2.09) (range 38–51 mm) for males and females, respectively. For the age group 40–49 years, the mean MMO was 48.94 (SD ± 1.66) mm (range 39–54 mm) for males and 46.73 (SD ± 2.84) mm (range 38–50 mm) for females. In the age group of 50–60 years, the corresponding values for males and females were 46.98 (SD ± 2.04) (range 36–50 mm) and 44.76 (SD ± 2.59) mm (range 36–49 mm). Conclusion: The MMO range for different age groups is established for normal adult Pune Maharashtra population.

OCCLUSAL TRAUMA OF IMPLANT-SUPPORTED METAL-CERAMIC CROWN: A CASE REPORT

In this article there is a clinical case of occlusion trauma of implant-supported metal-ceramic crown for prosthetics of central incisor. Its uniqueness is the possibility to save dental implant after acute occlusion impact, which was strong enough to break ceramic facing of fixed denture, but not able to destroy bone and implant components. The occlusion force located at the incisal edge of the crown induced a reverse torque to the implant and did not result in its failure or bone resorption. In a year after repeated fixed prosthetics, the results of clinical examination proved absence of any problem with osseointegration. Literature analysis lets us to suggest, that the phenomenon was caused by protective action of cortical bone around of dental implant. Besides, in the case of natural tooth, the bone is suddenly compressed against the conical root; it transfers occlusal breaking to the supporting periodontal ligament. A dental implant has no periodontal ligament but can have a rough surface that may preclude implant failure.

Spectrophotometric Analysis of Coronal Discolouration Induced by ProRoot MTA, Biodentine and MTA Repair HP Used for Pulpotomy Procedures.

Objective:To assess and quantify coronal tooth discolouration by ProRoot MTA, Biodentine and MTA repair HP as pulpotomy agents and to identify colour stability of these materials in presence of blood contamination.Methods:120 human premolar teeth were used in the study. The teeth were sectioned horizontally 1 mm apical to the cementoenamel junction. A retrograde cavity extending within 2 mm of the incisal edge was prepared. The specimens were randomly distributed as; Control; Group 1, ProRoot MTA: Group 2, Biodentine: Group 3 and MTA repair HP: Group 4. The groups werefurther subdivided on basis of exposure to saline (subgroup A) or blood (subgroup B). The access was sealed with light cured Glass ionomer cemet and the specimens were stored in artificial saliva at 37°C. The Colour change was evaluated with a spectrophotometer at: day 0 (T0), day 1 (T1), day 7 (T7), 1 month (T30), 2 months (T60), and 6 months (T180). The colour measurements were recorded using the Commission Internationale de l’Eclairage L*a*b* value.Results:For all groups, there was a sharp increase in L* parameter at T1. At 6 months, Group 1B (Control + blood) showed maximum decrease in luminosity followed by Group 2A (ProRoot + saline) > Group 4B (MTA repair HP + blood) > Group 2B (ProRoot + blood). Group 3A (Biodentine + saline) showed the least amount of decrease in luminosity followed by Group 4A (MTA repair HP + saline) and Group 3B (Biodentine + blood). No significant difference was found in ∆E change between any of the groups from baseline to 180 days (P>0.05).Conclusion:Relative to L* parameter, it was possible to observe a statistically significant decrease in luminosity in the Group1B (Control + blood) followed by ProRoot MTA (Group 2A and 2B) and MTA repair HP (Group 4A and 4B). Biodentine (Group 3A and 3B) showed least tooth discolouration in terms of L* parameter.

Clinical crown lengthening: A case report

Clinical crown of the tooth is the distance from gingival margin to incisal edge or occlusal surface of the tooth. Crown lengthening is a surgical procedure designed to increase the extent of the supragingival tooth structure, so that the clinician can restore the tooth. The crown lengthening procedure (CLP) is commonly used to maintain the dentogingival complex in optimal conditions and to correct aesthetic defects through a smile design. CLP in an anterior aesthetic driven region could be challenging. Hence, a multidisciplinary approach for better surgical and prosthetic outcomes should be practised. The current case report emphasises the need for prostho-perio interdisciplinary approach while restoring anterior esthetics and function.

Determination of Facial References for Esthetic Restorative Treatment.

Although it is generally accepted that a prosthetic restoration must take into account the gingiva, smile, and patient's face, it is often difficult to determine precisely what facial references must be considered. The purpose of this study was to determine the correct vertical and horizontal facial reference planes in esthetic prosthetic treatment. Using photographic analysis of 160 individuals, the different facial reference planes (interpupillary, intermeatic, intercommissural, and incisal edge lines; facial midline; and Camper and Frankfort planes) were compared to the ideal prosthetic reconstruction axis. Additional measurements, including the human eye's ability to perceive parallelism, were recorded. Most participants (64%) exhibited facial asymmetry. Asymmetry was horizontal (difference between widths of the right and left sides; 52.4%), vertical (difference between heights of the right and left sides; 6.9%), or mixed (4.7%). The interpupillary line is the main horizontal reference in 88.4% of situations, with the intercommissural line the second most important. In the profile view, the horizontal plane was on average 6.5 degrees above the Camper plane and 9 degrees below the Frankfort plane. The human eye's ability to perceive parallelism between two lines was found to be limited to differences of approximately 1 degree. During anterior tooth reconstruction, it is necessary to take into account the right horizontal and vertical esthetic references. Knowledge of the biometric facial parameters in natural dentition is necessary to define the right reconstruction axes based on the facial symmetry or asymmetry.

Aesthetic Rehabilitation of Discoloured Anterior Teeth with Facial Talon’s Cusp: A Case Report

Talon’s cusp is described as a process of horn-like shape curving from the base downwards to the cutting edge. Ripa and Mellor later described this phenomenon as talon cusp resemblance to talon of eagle. Talon cusp is a well-defined extra addition cusp like structure which extends from half of the cementoenamel junction to the incisal edge on the surface of an anterior tooth. The aetiology is unknown for the formation of the talon cusp. A talon cusp is often diagnosed during routine dental examination as an incidental finding and usually does not show any symptoms. In such cases, careful clinical and radiographic examination is mandatory for correct diagnosis and treatment planning. Due to limitation of 2 D (two dimensional) radiographs, these images are unable to recognise the complicated anatomy of the tooth.Use of Cone-Beam Computed Tomography (CBCT) has become common in dentistry. CBCT has been useful in producing a three dimensional (3 D) image without distortion of the teeth, maxillofacial skeleton and related tissues. Scan of CBCT help to plan treatment and also provide valuable information about dental anatomy. This paper describes a case of 23-year-old female patient with a facial talon cusp on the permanent maxillary left central incisor, which was endodontically managed and followed by aesthetics rehabilitation with a follow-up for a period of one year.

Tratamento de mordida aberta com a técnica ortodôntica fixa sem bráquetes, com tecnologia tridimensional 3DBOT (bracketless orthodontics treatment)

Anterior open bite is a type of malocclusion in which there is the presence of a negative vertical overlap between the incisal edges of the upper and lower anterior teeth. It is considered a complex anomaly with distinct characteristics and difficult to treat with prevalence of 25% to 38% of patients orthodontically treated. The aim of this article is to report a clinical case of Class III right subdivision and open bite using 3DBOT technique, a fixed, comfortable, predictable, imperceptible technique with 3D technology and with extreme clinically proven satisfaction. Case report: Patient V.B.V.S., 23 years and 1 month old, leukoderma, male, mild dholico, straight profile, symmetrical, Class ¼ of Class III of molar and canine right subdivision, anterior open bite, inverted smile, mild upper and anterior dental crowding. Treatment plan: The use of 3DBOT was planned along with the use of intermaxillary elastics and refinement with the aid of MyAligner® aligners. Conclusion: The 3DBOT technique showed to be a viable option for treating anterior open bite

Biomechanical Evaluation of a New Fixation Method for Stabilization of Sagittal Split Ramus Osteotomy After Mandibular Advancement

Study Design: Biomechanical in vitro study. Mandibular advancement after sagittal split ramus osteotomy (SSRO) is a common procedure in orthognathic surgery. Several fixation methods are used for stabilization of SSRO. Objective: The aim of this study was to compare a new fixation method (gridplate) with more contemporary applied methods of fixation. Material and Methods: In this study, 50 polyurethane hemimandibles with a prefabricated SSRO were used as specimens. All hemimandibles were advanced by 8 mm and divided into 5 groups with different fixation methods: (A) one 4-hole miniplate with 4 monocortical screws; (B) two 4-hole miniplates with 8 monocortical screws; (C) one 4-hole miniplate with 4 monocortical screws and 1 bicortical screw in the retromolar area (hybrid method); (D) 3 bicortical screws in an inverted-L pattern; and (E) one 8-hole gridplate with 8 monocortical screws. Loads in newtons were recorded at displacements of the mandibular incisive edge at 1 mm, 3 mm and 5 mm. Results: Fixation with 3 bicortical screws and the gridplate presented the most stability, followed by two 4-hole miniplates. Fixation with the hybrid method or the single miniplate showed the least stability. Conclusion: According to the results of this study, the 8-hole gridplate design appears a sufficient fixation method regarding stabilization of SSRO with larger mandibular advancement.

Three-dimensional mandibular dental changes with aging

This study aimed to evaluate the 3-dimensional (3D) mandibular dental changes over 42years using the registration of digital models. The sample comprised digital dental models of 8 untreated subjects (4 males and 4 females) with normal occlusion measured longitudinally at ages 17years (T1) and 60years (T2). Using 13 landmarks placed on the mucogingival junction, we registered the T2 model on the T1 model. Three-dimensional changes in the position of the landmarks on the buccal cusp tip of the posterior teeth and incisal edge of the central incisors were measured by 2 examiners. Registration and measurements were performed using SlicerCMF (version 3.1; http://www.slicer.org) software. Intra- and interrater agreements were evaluated using intraclass correlation coefficients and the Bland-Altman method. One-sample t tests were used for evaluating interphase 3D dental changes (P<0.05). Adequate intra- and interrater reproducibility was found. From T1 to T2, the mandibular teeth showed significant 3D positional changes. A significant dental eruption relative to the mucogingival junction was observed for the anterior and posterior teeth. Anteroposterior movements of mandibular teeth were not significant except for the right molar that drifted mesially. Transverse movements included slight lingual tipping at canines and premolars regions. Dental changes in untreated normal occlusion were very slight from early to mature adulthood. The eruption of the mandibular teeth was the most consistent finding. A tendency for mesial movement of molars and lingual movement of first premolars and canines was observed in the mandible during the aging process.

Rehabilitating simulated worn dentition by using a complete digital workflow and five anatomic guidelines

This report describes the rehabilitation of worn dentition by using a complete digital workflow on a nonhinged simulated patient. A dentiform was used to represent an individual with loss of occlusal vertical dimension. Interim restorations were designed following the simulated patient's midline, interpupillary line, and ala-tragus line and a defined central incisal edge position, posterior maxillary teeth central groove, and buccal cusp position of posterior maxillary teeth. The definitive restorations were then designed and fabricated by following the contour of the interim restorations.

Difference in laminated mouthguard thickness according to the laminate order.

Mouthguard thickness should be maintained to prevent oral trauma by protecting the teeth and the surrounding soft tissue. The aim of this study was to examine the difference in laminated mouthguard thickness according to the laminate order. The mouthguard sheets used in this study were 2.0mm and 3.0mm ethylene-vinyl acetate. The sheets were pressure-formed using a pressure former, and the laminated mouthguard was fabricated. Two laminate conditions were examined. One condition used the 2.0-mm sheet for the first layer and the 3.0-mm sheet for the second layer (condition 2F3S) and the other condition used the 3.0-mm sheet for the first layer and 2.0-mm sheet for the second layer (condition 3F2S). The first layer was trimmed to cover the labial surface and incisal edge of the anterior teeth and the buccal and occlusal surfaces of the posterior teeth. The second layer was formed over the first layer. The mouthguard thickness was measured at the labial surface of the central incisor and the buccal and occlusal surfaces of the first molar. Differences in thickness by measurement region of mouthguards formed under different laminate conditions were analyzed by two-way analysis of variance. The mouthguard thickness was significantly different at the measured regions of the central incisors and the first molars (p<.01). The thickness at the labial surface of the central incisor and at the buccal and occlusal surfaces of the first molar became statistically significantly larger with the 3F2S condition than that for the 2F3S condition (p<.05 or p<.01). The thickness of the laminated mouthguard became larger when the sheet thickness of the first layer was greater. It is recommended to use the thicker mouthguard sheet as the first layer when fabricating a laminated mouthguard.

Reanatomization of anterior teeth with composite resin: case report

Dental diastema is a space or absence of contact between two consecutive teeth, which may represent an aesthetic embarrassment for the patient when smiling. For the aesthetic resolution of diastema some factors should be evaluated as, age of the patient, dental structure conservation, reversibility of treatment, cost and longevity. For closing diastema, for a long time, the clinical alternatives were the use of orthodontics and fixed prostheses. Currently, with composite resins, it is possible to reproduce natural characteristics of the teeth with a direct, reversible restorative technique, without the wear of healthy dental structure, with affordable cost, able to provide satisfactory aesthetic results. The aim of this study is to report a case of a patient diagnosed with inter incisor diastema and to present a literature review. Patient, male, 70 years old, was attended at oral clinic of Ingá University Center - Uningá, complaining about the aesthetics of his smile. Clinically, was observed the presence of a diastema between upper incisor, fracture of incisal edge of central incisors and poor dental positioning. A reverse planning of the case was carried out through diagnostic waxing. With aid of a silicone guide, the diastema was closed through reanatomizations in composite resin. After the proposed treatment, was possible to obtain a satisfactory aesthetic in the patient's smile. The closure of diastema, with the use of composite resins was able to provide a better contour to the teeth, closing the spaces present, resulting in an aesthetic and pleasant smile.

A photographic evaluation of factors prevalent in Nepalese smile: A cross-sectional study

Aim: The aim of this study was to find out the prevalence of different characteristics of smile and to determine the level of normalcy based on the above. Materials and Methods: The standardized digital photographs of 529 participants were collected and transferred to personal computer in which the different characteristics of smile were visually inspected. Results: Smile with average upper lip position (54%) straight upper lip curvature in smile (46.9%), parallel incisal line to upper border of lower lip (51.8%) and incisal edges of maxillary dentition not touching to lower lip (62.4%) were most occurring characteristics with statistically significant prevalence of gingival and mucosal smiles amongst females. Conclusions: The study outlined few most occurring characteristics in smile of Nepalese population. The average upper lip position, straight upper lip curvature and parallel incisal line were some of the most prevalent characteristics in Nepalese smile. Keywords: Smile, Esthetics, Dentition, Nepalese.

Photoelastic stress analysis of different types of anterior teeth splints.

Traumatic dental injuries are highly prevalent and are considered an important health problem. The aim of this study was to evaluate the in vitro stress distribution around simulated traumatized teeth subjected to different types of splints by photoelastic analysis. For each group, five models of maxillary and mandibular arches were made in photoelastic resin using prefabricated teeth models, which were fixed and adjusted in a semi-adjustable articulator. All splints were bonded with composite resin on the labial surfaces of the maxillary central incisors, the lateral incisors and the canine teeth, simulating trauma to the 11. The groups were divided according to the type of splint: control-without splint; rigid-brackets and 0.021×0.025 inch stainless steel wire; semi-rigid-brackets and 0.016×0.016 inch cobalt-chromium wire; fiber-fiberglass ribbon; and flexible-nylon thread. The groups were submitted to an occlusal force in a special device attached to a universal test machine in balanced, protrusive, and lateral occlusions. Then, the incisal edge of the 11 was ground to simulate infra-occlusion, and the tests were performed again. Five points were analyzed around tooth 11 with a polariscope, and the data were submitted to ANOVA and Tukey tests at a 5% level of significance. When centric occlusion was analyzed by comparing normal occlusion to infra-occlusion, all groups showed high stress values in infra-occlusion with statistical differences-except for the control group. When lateral occlusion was analyzed, the nylon splint showed lower statistical differences compared with the control, fiberglass, and rigid splint groups, which did not differ between each other. The semi-rigid splint did not differ from any group. Fiberglass and semi-rigid splints showed better stress distribution around the traumatized tooth under occlusal loads. The nylon splint showed characteristics of non-stress distribution.

Accuracy of trial restorations from virtual planning: A comparison of two fabrication techniques

Statement of problemDifferent technologies have been used to fabricate trial restorations. However, studies investigating the accuracy of trial restorations fabricated with different techniques in comparison with the initial 3-dimensional virtual design are lacking. PurposeThe purpose of this clinical study was to evaluate completely digital workflows for managing the esthetic outcome through the production of trial restorations with 2 different technologies: stereolithography apparatus (SLA 3D) and computer-aided design and computer-aided manufacturing (CAD-CAM). The aim was to determine which of them provided trial restorations more similar to those of the 3D virtual design. Material and methodsThirty participants who did not meet ideal esthetic proportions for the anterior maxillary teeth were enrolled. For each, 2 intraoral and extraoral frontal photographs and intraoral digital scans were made. The digital images were processed by using the Digital Smile System (DSS) software program to have a smile preview after the treatment. Virtual designs were matched with the surface tessellation language (STL) files from the intraoral scans and edited by exocad DentalCAD to create custom trial restorations using SLA 3D and CAD-CAM technologies. Two independent examiners measured the virtual restorations by using virtual calipers in the software program and then the trial restorations by using digital calipers. The measurements were carried out from the incisal edge to the gingival margin, mesial-distal widths of the central incisors, and the distance from the distal margins of maxillary right and left canines. The trial restorations were evaluated intraorally for fit. The participants approved the definitive treatment outcome after the evaluation. The normality of data was verified with the Shapiro-Wilk test, and the Friedman test for matched groups with the Bonferroni and Dunn tests for multiple comparisons were used (α=.05). ResultsComparing the 3D designs with the printed trial restorations, a significant increase was only found in the mesial-distal width of central incisors (P<.05), while the milled trial restorations showed a significant increase (P<.05) of all measurements except for the maxillary right and left canines. Comparing printed trial restorations with the milled ones, the only significant difference was found in height measures of maxillary right central incisor, with the milled trial restorations exhibiting higher values than the printed ones (P<.05). The printed trial restorations showed good clinical fit, and the milled restorations had poor clinical adaptation. ConclusionsThe accuracy of printed trial restorations was higher than that of milled trial restorations, except for the canine to canine width of maxillary anterior teeth. However, this difference did not compromise the fit of the printed trial restorations. The milled trial restorations had increased dimensions in comparison with the measurements made in 3D designs, and consequently, their clinical fit was compromised. SLA 3D- printing technology provided the best fit.

A 3-D Finite Element Analysis of a Single Implant Retained Overdenture Reinforced with Short Versus Long Frameworks.

Due to its simplicity and patient satisfaction, an implant-retained overdenture has become the most preferred treatment for edentulous patients. Due to the presence of an attachment system at mandibular anterior region, however, base fracture is the most common complication of overdenture. This study aimed to evaluate the stress distribution and deformation on a symphyseal single implant retained mandibular overdenture using a three-dimensional finite element. Zirconia versus acrylic overdenture was investigated. Acrylic overdentures reinforced with short (over inter-canine distance) or long (extending between first molars) zirconia, cobalt-chromium alloy or polyetherketoneketone framework were also investigated. A load of 100 N was applied to the incisal edge of mandibular central incisors at a 30º angle. Results showed that zirconia overdenture had lower von Mises stress and deformation in its components than acrylic. Reinforcement of an acrylic overdenture with cobalt chromium or zirconia short frameworks reduced von Mises stress and deformation on its components. Reinforcement of an acrylic overdenture with polyetherketoneketone framework did not show any significant reduction in von Mises stress and deformation. Therefore, it can be concluded that using zirconia overdenture or reinforcing an acrylic overdenture with cobalt chromium or zirconia framework could increase the longevity of the prosthesis.

Prevalence of sleep bruxism in children in primary dentition

Aim: To evaluate the prevalence of sleep bruxism in childrenbetween 2 to 6 years old in primary dentition in a public school(A1) and a private school (A2) in the state of Piauí. Method: Itwas cross-sectional and quantitative study in 370 participants,180 in A1 and 190 in A2. The questionnaire to help diagnosebruxism was applied to parents. In the clinical examination,dental wear was evaluated, checking for the presence ofshiny and polished facets on deciduous incisors and / ormolars (palatal surface, incisal edges and working cusps)and the results were noted in the odontogram. Students whohad bruxism participated in group 1 (G1) and those who didnot have it were in the control group (CG) in both A1 and A2.Results: One hundred and five children had sleep bruxism.Tooth wear was more prevalent in the male gender. Both in A1and in A2 and in both genders, wear on primary molars wasmore frequent than in canines. Conclusion: The prevalence ofbruxism in children between 2 and 6 years of age was 28.3%,with a predominance in males. There was an associationbetween sleep bruxism and the habit of sucking a finger,pacifier, bottle use and the habit of awake bruxism. In 98.09%of the children who had sleep bruxism, teeth pain was found.

The reliability and reproducibility of an Android cephalometric smartphone application in comparison with the conventional method.

To assess the reliability and reproducibility of linear and angular measurements of the cephalometric smartphone Android application OneCeph in comparison with the conventional method. A total number of 22 landmarks were registered, and 26 skeletal and dental cephalometric parameters were measured on 30 pretreatment cephalograms. The measurements for both digital (OneCeph) and conventional tracings were performed twice with a 4-week interval. The reliability (intraexaminer error) was evaluated by using the Pearson correlation coefficient. The variation in measurements between the tracing techniques (reproducibility) was determined by paired t-test. The Pearson correlation coefficients of all cephalometric measurements for each tracing technique were ≥ 0.95. Significant differences between the two tracing techniques were detected in five measurements (SNB angle, N I to Pog linear measurement, U1-Apoint linear measurement, U lip to S line, and nasiolabial angle; P < .05). Using 26 measurements to compare both tracing methods, all mean differences between the digital (OneCeph) and conventional methods were below 1 degree/1 mm, indicating that differences between the tracing methods were clinically insignificant. The U1-A point measurement was an exception for the digital method (OneCeph) with a clinically significant difference of 1.25 mm (P < .01); the difference was a result of wrongly measuring the distance from the A line to the incisor edge of the upper central incisor rather than the facial surface of the upper incisor. This leads to the conclusion that both tracing methods were reliable for daily clinical practice.

Periodontal plastic surgery for the management of an ankylosed permanent maxillary lateral incisor: A clinical report with 5-year follow-up

Anterior maxillary tooth ankylosis disturbs the development of the alveolar bone process, leading to discrepancies between the cervical gingival margin and incisal edge position of the affected tooth, and therefore, the esthetics is compromised. Proposed treatments in adults and growing patients have been used successfully, but they have disadvantages and are contraindicated in some circumstances. This article proposes an alternative treatment for an ankylosed permanent maxillary anterior tooth with a slow replacement resorption rate in an adult patient, for whom a combination of a periodontal plastic surgery procedure and a fixed dental prosthesis was used to correct the esthetics. This treatment has less risk of complications, preserves the ankylosed tooth as long as possible, creates an optimal gingival contour, and maintains the alveolar bone for further treatment should the tooth be lost.

Application of digital technique aided occlusal rehabilitation in implant-supported fixed prosthesis of fully edentulous patients

Objective: To evaluate the clinical outcomes of digital technique-aided occlusal rehabilitation based on implant-supported fixed prostheses (ISFP), and to provide some information for clinical application of digital technique. Methods: Retrospectively reviewed the cases which had used neuromuscular system and condylar movement tracing device to reconstruct occlusion in one or double jaw fully edentulous ISFP from January, 2013 to January, 2020. A total of 6 eligible patients were enrolled in the present study with 56 implants and 8 ISFP, including 4 male patients and 2 female patients, aged from 43 to 74 years. The clinical outcomes were evaluated in four aspects, including implant survival rate, implants success rate, marginal bone loss and the occurrence of prosthesis complications. Results: The follow-up time was (4.0±2.2) years (1-7 years). The implant survival rate was 100% (56/56) and the implant success rate was 98% (55/56), with an average missal and distal marginal bone loss of (0.04±0.11) mm/year. Veneer chipping occurred at incisal edge of 2 adjacent incisors in only one prosthesis 3 years after rehabilitation. Conclusions: Combination of digital techniques of neuromuscular system and condylar movement tracing device to assist occlusal rehabilitation based on ISFP showed a high implant success rate. The complication seldom happened. Long and stable occlusion has been observed. The clinical outcomes were favorable.