Comparative Evaluation of Gingival Zenith Deviation from the Vertical Bisected Midline and Apicocoronal Displacement of the Zenith of Lateral Incisor from Gingival Zenith Level: A Cross-sectional Study
Shivanand Aspalli, Susan Abraham, Reetika Gaddale, N Syeda Shagufta, Ashrita Agrawal, Minam Tamuk
Citation Information :
Aspalli S, Abraham S, Gaddale R, Shagufta NS, Agrawal A, Tamuk M. Comparative Evaluation of Gingival Zenith Deviation from the Vertical Bisected Midline and Apicocoronal Displacement of the Zenith of Lateral Incisor from Gingival Zenith Level: A Cross-sectional Study. Int J Prosthodont Restor Dent 2021; 11 (2):88-92.
Aim and objective: To measure the deviation of the gingival zenith (GZ) of maxillary anterior teeth with the vertical bisected midline (VBM) and apicocoronal displacement of lateral incisor zenith from GZ level of central incisor and canine.
Materials and methods: For 50 periodontally healthy subjects (age range 18–50 years) having all anterior teeth, alginate impressions were made and a diagnostic cast was obtained. Gingival zenith was marked and its deviation from the VBM was measured for the maxillary anterior teeth using the method described by Chu and Stappert. The apicocoronal distance of the GZ point of the lateral incisor was measured from the GZ level of the central incisor and canine. The data were tabulated and subjected to statistical analysis.
Results: Gingival zenith deviation was greater in the central incisor, followed by lateral incisor and canine. The mean apicocoronal displacement of the GZ of the right lateral incisor was 0.606 ± 0.417 mm and the left lateral incisor was 0.537 ± 0.414 mm from the GZ level.
Conclusion: Gingival zenith deviation can be mesial or distal and is tooth-dependent. It was found that in the majority of cases, lateral incisors showed coronal displacement of GZ from the GZ line.
Frizzera F, Tonetto M, Cabral G, et al. Periodontics, implantology, and prosthodontics integrated: the zenith-driven rehabilitation. Case Repor Dentis 2017;2017:1070292. DOI: 10.1155/2017/1070292.
Rathod Varsha J. Quantitative evaluation of deviation of gingival zenith position in maxillary anterior dentition. Int J Recent Sci Res 2017;8(4):16741–16744.
Bhuvaneswaran M. Principles of smile design. J Conservat Dentis 2010;13(4):225–232. DOI: 10.4103/0972-0707.73387.
Chu SJ, Tan JH-P, Stappert CFJ, et al. Gingival zenith positions and levels of the maxillary anterior dentition. J Esthet Restor Dent 2009;21(2):113–121. DOI: 10.1111/j.1708-8240.2009.00242.x.
Magne P, Belser U. Bonded porcelain restorations in the anterior dentition: a biomimetic approach. Chicago: Quintessence Publishing; 2002. pp. 57–98.
Singhal M, Singhal RA. CAD-CAM prosthodontic option and gingival zenith position for a rotated maxillary right central incisor: an evaluation. Indian J Dent Res 2012;23(1):112–115. DOI: 10.4103/0970-9290.99053.
Mattos CML, Santana RB. A quantitative evaluation of the spatial displacement of the gingival zenith in the maxillary anterior dentition. J Periodontol 2008;79(10):1880–1885. DOI: 10.1902/jop.2008.080053.
Appukutan D, Cholan PK, Ashwini CR, et al. Assessment of gingival zenith position and distance from vertical bisecting midline in the maxillary anterior dentition-an observational study. J Orofac Sci 2018;10(79):1880–1885.
Goodlin R. Gingival aesthetics: a critical factor in smile design. Oral Health and Dental Practice 2003;93(4):1027 Charruel S, Perez C, Foti B. Parameters for gingival contour assessment. J Periodontol 2008;79(5):795–1801.
Patil AS, Ranganath V, Yerawadekar SA, et al. Pink esthetics: a study on significant gingival parameters. J Contemp Dent Pract 2020;21(2):207–210. DOI: 10.5005/jp-journals-10024-2739.
Pawar B, Mishra P, Banga P, et al. Gingival zenith and its role in redefining esthetics: a clinical study. J Indian Soc Periodontol 2011;15(2):135–138. DOI: 10.4103/0972-124X.84382.
Kolte AP, Kolte RA, Samarth GK. Association of the nasolabial angle and lip length with the gingival and interdental smile line—a gender based evaluation. J Esthet Restor Dent 2020. 1–7.
Kolte RA, Kolte AP, Rathi P. Association of the gingival line angle with the gingival and interdental smile line: a gender based evaluation. J Esthet Restor Dent 2019;1–7.
Pham TA, Nguyen PA. Morphological features of smile attractiveness and related factors influence perception and gingival aesthetic parameters. Int Dent J 2021;1–9. DOI: 10.1016/j.identj.2021.02.001.