Evaluation of Impacting Factors on Facial Bone Thickness in the Anterior Maxillary Region

Farahamnd, Amirhossein; Sarlati, Fatemeh; Eslami, Saeedeh; Ghassemian, Marjan; Youssefi, Navid; Esfahani, Bahareh Jafarzadeh

doi:10.1097/scs.0000000000003643

Cited by 24 publications

(20 citation statements)

References 24 publications

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“…On the other hand, our results were slightly higher than those of recently published works, where the average values for the upper arch teeth were less than 1 mm for all sites, and we did not find statistically significant differences between left and right teeth [ 15 , 27 – 29 ].…”

Section: Discussioncontrasting

confidence: 98%

Thickness of the buccal bone wall and root angulation in the maxilla and mandible: an approach to cone beam computed tomography

López-Jarana

Díaz-Castro²,

Falcão

et al. 2018

BMC Oral Health

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BackgroundThe objective of this paper is to anatomically describe the bone morphology in the maxillary and mandibular tooth areas, which might help in planning post-extraction implants.MethodsCBCT images (Planmeca ProMax 3D) of 403 teeth (208 upper teeth and 195 lower teeth) were obtained from 49 patients referred to the Dental School of Seville from January to December 2014. The thickness of the facial wall was measured at the crest, point A, 4 mm below, point B, and at the apex, point C. The second parameter was the angle formed between the dental axis and the axis of the basal bone.ResultsA total of 403 teeth were measured. In the maxilla, 89.4% of incisors, 93.94% of canines, 78% of premolars and 70.5% of molars had a buccal bone wall thickness less than the ideal 2 mm. In the mandible, 73.5% of incisors, 49% of canines, 64% of premolars and 53% of molars had < 1 mm buccal bone thickness as measured at point B. The mean angulation in the maxilla was 11.67 ± 6.37° for incisors, 16.88 ± 7.93° for canines, 13.93 ± 8.6° for premolars, and 9.89 ± 4.8° for molars. In the mandible, the mean values were 10.63 ± 8.76° for incisors, 10.98 ± 7.36° for canines, 10.54 ± 5.82° for premolars and 16.19 ± 11.22° for molars.ConclusionsThe high incidence of a buccal wall thickness of less than 2 mm in over 80% of the assessed sites indicates the need for additional regeneration procedures, and several locations may also require custom abutments to solve the angulation problems for screw-retained crowns.

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Section: Discussioncontrasting

confidence: 98%

Thickness of the buccal bone wall and root angulation in the maxilla and mandible: an approach to cone beam computed tomography

López-Jarana

Díaz-Castro²,

Falcão

et al. 2018

BMC Oral Health

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“…Cone beam computed tomography (CBCT) had many advantages when used in the diagnosis of sinusitis, the integrity and thickness of the sinus membrane, the measurement of the size and boundaries of tumors, as well as anatomical structures including septa and blood vessels [ 17 , 18 ]. Panoramic radiographs have been used more often in routine clinical examination because of the lower cost and lower levels of radiation exposure when compared with CBCT.…”

Section: Introductionmentioning

confidence: 99%

Radiological Changes Associated with New Bone Formation Following Osteotome Sinus Floor Elevation (OSFE): A Retrospective Study of 40 Patients with 18-Month Follow-Up

et al. 2018

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BackgroundOsteotome sinus floor elevation (OSFE) is used to increase the bone volume at the site of the maxillary sinus through the transalveolar approach, and may require support with bone grafting. The aim of this retrospective study was to evaluate the radiological changes associated with new bone formation following OSFE during an 18-month follow-up period.Material/MethodsForty patients (including 51 implants) underwent OSFE with final dental reconstruction with a single crown, six months after surgery. Of the 51 dental implants, 24 were implanted with bone grafts, and 27 were implanted without bone grafts. All patients were reviewed using preoperative cone beam computed tomography (CBCT) and panoramic radiographs in postoperative follow-up immediately after OSFE, at six-month follow-up, at 12-month follow-up, and at 18-month follow-up. The degree of new bone formation following OSFE was measured by endo-sinus bone gain (ESBG) in the digital radiographs, and the related factors were analyzed.ResultsAt 18-month follow-up, the mean ESBG was 2.55±2.24 mm (range, 0.1–8.6 mm). Partial correlation analysis showed that there was no significant correlation between residual bone height (RBH) and ESBG (partial correlation coefficient −0.143) (P=0.328). There were significant positive correlations between the implant protrusion length (IPL) and ESBG (partial correlation coefficient 0.560) (P=0.000), and whether to perform bone grafts and ESBG (partial correlation coefficient 0.596) (P=0.000).ConclusionsFollowing OSFE combined with a short implant, the IPL and the performance of bone grafts were significantly associated with new bone formation.

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“…Systemic factors could also in uence the CEJ-FBC distance; diabetics, hypertensive, thyroid disorders, hyperlipidemia, depression and asthma has been related to greater CEJ-FBC distance [12]. Progressive periodontal attachment loss throughout life also results in an increased CEJ-FBC distance [16].…”

Section: Discussionmentioning

confidence: 99%

“…The effect of systemic diseases, occlusal relationship and smoking habits on FAB thickness have been evaluated, but none of these factors has demonstrated a signi cant in uence on FAB anatomy [12].…”

Section: Introductionmentioning

confidence: 99%

Facial Alveolar Bone Thickness and Modifying Factors of Anterior Maxillary Teeth: A Systematic Review and Meta-Analysis of Cone-Beam Computed Tomography Studies

Rojo-Sanchis

Soto-Peñaloza

Peñarrocha‐Oltra

et al. 2020

Preprint

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Background: Understanding the anatomy of the facial alveolar bone (FAB), provides a prognostic tool for estimating the degree of dimensional ridge alterations after tooth extraction. This study aimed to systematically review the FAB thickness of anterior maxillary teeth measured by CBCT scans. A secondary objective was to assess the facial distance from the cementoenamel junction (CEJ) to the bone crest.Methods: An electronic search was made of Medline, Embase, Web of Science, Cochrane Library and Google Scholar up to December 2019. Studies that analyze and quantitatively compare FAB thickness at maxillary teeth by CBCT scans were included. The methodological quality of the included studies was appraised using the ROBINS-I tool from the Cochrane Collaboration. A meta-analysis of single means, subgroup analysis and meta-regression of covariates were conducted.Results: Twenty-nine studies, including 17,321 teeth, were selected. Seventeen studies considered the facial bone crest, and 12 the CEJ as a reference point for their measurements. Mean FAB thickness was ≤ 1 mm in maxillary incisors and canines (0.75-1.05 mm) and 1-2 mm in premolars. Patients over 50 years of age and females exhibited a thinner FAB at some apico-coronal locations of maxillary incisors and canines. Thicker gingival phenotypes were associated with a thicker FAB in maxillary incisors and canines. The geographical setting proved to be an effect modifier that could explain up to 87% of the heterogeneity in FAB thickness, being Asian populations that showed the lowest FAB thickness values. The CEJ-bone crest distance was 2-2.5 mm in all teeth analyzed. Population over 50 years of age exhibited greater CEJ-bone crest distances, and males also showed a trend for greater distance. The prevalence of bone dehiscences at maxillary incisors and canines was 12.3-20.1%; while the prevalence of fenestrations was between 6.4% and 23.8%.Conclusions: Facial alveolar bone is thin, heterogeneous in width along its apico-coronal dimensions, and increases in thickness in maxillary premolars. The prevalence of < 1 mm FAB thickness was 69.9% in central incisors, 64.5% in lateral incisors, 55% in canines and 40.4% at first premolars. The CEJ-bone crest distance presented homogeneous and similar values in all teeth analyzed.

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Evaluation of Impacting Factors on Facial Bone Thickness in the Anterior Maxillary Region

Abstract: The current study has advocated the outcome of a mostly thin buccal bone overlying the maxillary anterior teeth; hence, clinicians should always consider the thickness of the facial cortical plate of the extraction site and the positioning of the implant placement in the socket.

Cited by 24 publications

References 24 publications

Thickness of the buccal bone wall and root angulation in the maxilla and mandible: an approach to cone beam computed tomography

Thickness of the buccal bone wall and root angulation in the maxilla and mandible: an approach to cone beam computed tomography

Radiological Changes Associated with New Bone Formation Following Osteotome Sinus Floor Elevation (OSFE): A Retrospective Study of 40 Patients with 18-Month Follow-Up

Facial Alveolar Bone Thickness and Modifying Factors of Anterior Maxillary Teeth: A Systematic Review and Meta-Analysis of Cone-Beam Computed Tomography Studies

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